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ObjectivesGenetic association studies on alopecia areata (AA) performed in various populations have shown heterogeneous results. The aim of the current review was to synthesize the results of said studies to estimate the impact of FAS, FASL, PTPN22, CTLA4 and IL2RA gene polymorphisms on AA susceptibility.DesignA systematic literature search was conducted in the Medline, Web of Science, Scopus, EMBASE and LILACS databases. Studies published up to June 2020 were included. The results available in the grey literature including the Open Grey and Google Scholar databases were also used. The texts of potentially related studies were screened by individual reviewers. Evidence of publication bias was assessed using the Newcastle-Ottawa scale and the quality of evidence was assessed using the GRADE system. The quantitative synthesis was performed using the fixed effect model.ResultsOut of 1784 articles, we identified 18 relevant articles for the qualitative synthesis and 16 for the quantitative synthesis. In a study of rs2476601 polymorphism of PTPN22 gene, including 1292 cases and 1832 controls, a correlation was found with the risk of developing AA in the allelic model (OR1.49 [95% C:1.13-1.95]), the heterozygous codominant (OR1.44 [95% CI:1:19-1.76]) and dominant model (OR1.43 [95% CI:1.18-1.73]). No association was found between the presence of FASL, PTPN22, CTLA and IL2RA gene polymorphisms with AA susceptibility.ConclusionsThe results suggest that the T allele of the single nucleoid polymorphism (SNP) rs2476601 in PTPN22 gene is a risk factor for developing alopecia areata. However, more robust studies defining the ethnic background of the population of origin are required, so that the risk identified in the present study can be validated. Additionally, a greater number of studies is necessary to evaluate the role of the FAS, FASL, PTPN22, CTLA4 and IL2RA genetic variants, given the heterogenous results found in the literature.

Introduction: There is currently no known cure for cognitive impairment, which highlights the need to explore other ways of managing this condition. This topic has recently become an area of active research. However, the availability of nonpharmacological options poses a challenge when trying to determine the best treatment for improving cognitive function., Methods: We conducted a systematic review and a Bayesian network meta-analysis to compare the effects of nonpharmacological interventions on global cognition in patients with mild cognitive impairment and dementia. The nonpharmacological interventions were classified as aerobic exercise, strength exercise, multicomponent physical exercise, other physical exercises, tai chi, mind-body exercises, traditional cognitive rehabilitation, computer-based cognitive rehabilitation, occupational therapy, music therapy, physical-cognitive rehabilitation, and reminiscence therapy., Results: Physical-cognitive rehabilitation emerged as the most effective nonpharmacological intervention for enhancing global cognition in patients with unspecified cognitive impairment and dementia, whereas occupational therapy focused on dual-task interventions was found to be the most effective nonpharmacological intervention for mild cognitive impairment., Conclusion: These results underscore the importance of adopting a dual approach to managing cognitive impairment, integrating both cognitive and physical rehabilitation within the same intervention., Competing Interests: DISCLOSURES We declare no competing interests. Funding: No funding was received for this study., (Copyright © 2024 The Authors. Published by Elsevier Inc. All rights reserved.)

Background: Alopecia areata is an autoimmune disease leading to nonscarring hair loss on the scalp or body. There are different treatments including immunosuppressants, hair growth stimulants, and contact immunotherapy., Objectives: To assess the benefits and harms of the treatments for alopecia areata (AA), alopecia totalis (AT), and alopecia universalis (AU) in children and adults., Search Methods: The Cochrane Skin Specialised Register, CENTRAL, MEDLINE, Embase, ClinicalTrials.gov and WHO ICTRP were searched up to July 2022., Selection Criteria: We included randomised controlled trials (RCTs) that evaluated classical immunosuppressants, biologics, small molecule inhibitors, contact immunotherapy, hair growth stimulants, and other therapies in paediatric and adult populations with AA., Data Collection and Analysis: We used the standard procedures expected by Cochrane including assessment of risks of bias using RoB2 and the certainty of the evidence using GRADE. The primary outcomes were short-term hair regrowth ≥ 75% (between 12 and 26 weeks of follow-up), and incidence of serious adverse events. The secondary outcomes were long-term hair regrowth ≥ 75% (greater than 26 weeks of follow-up) and health-related quality of life. We could not perform a network meta-analysis as very few trials compared the same treatments. We presented direct comparisons and made a narrative description of the findings., Main Results: We included 63 studies that tested 47 different treatments in 4817 randomised participants. All trials used a parallel-group design except one that used a cross-over design. The mean sample size was 78 participants. All trials recruited outpatients from dermatology clinics. Participants were between 2 and 74 years old. The trials included patients with AA (n = 25), AT (n = 1), AU (n = 1), mixed cases (n = 31), and unclear types of alopecia (n = 4). Thirty-three out of 63 studies (52.3%) reported the proportion of participants achieving short-term hair regrowth ≥ 75% (between 12 and 26 weeks). Forty-seven studies (74.6%) reported serious adverse events and only one study (1.5%) reported health-related quality of life. Five studies (7.9%) reported the proportion of participants with long-term hair regrowth ≥ 75% (greater than 26 weeks). Amongst the variety of interventions found, we prioritised some groups of interventions for their relevance to clinical practice: systemic therapies (classical immunosuppressants, biologics, and small molecule inhibitors), and local therapies (intralesional corticosteroids, topical small molecule inhibitors, contact immunotherapy, hair growth stimulants and cryotherapy). Considering only the prioritised interventions, 14 studies from 12 comparisons reported short-term hair regrowth ≥ 75% and 22 studies from 10 comparisons reported serious adverse events (18 reported zero events and 4 reported at least one). One study (1 comparison) reported quality of life, and two studies (1 comparison) reported long-term hair regrowth ≥ 75%. For the main outcome of short-term hair regrowth ≥ 75%, the evidence is very uncertain about the effect of oral prednisolone or cyclosporine versus placebo (RR 4.68, 95% CI 0.57 to 38.27; 79 participants; 2 studies; very low-certainty evidence), intralesional betamethasone or triamcinolone versus placebo (RR 13.84, 95% CI 0.87 to 219.76; 231 participants; 1 study; very low-certainty evidence), oral ruxolitinib versus oral tofacitinib (RR 1.08, 95% CI 0.77 to 1.52; 80 participants; 1 study; very low-certainty evidence), diphencyprone or squaric acid dibutil ester versus placebo (RR 1.16, 95% CI 0.79 to 1.71; 99 participants; 1 study; very-low-certainty evidence), diphencyprone or squaric acid dibutyl ester versus topical minoxidil (RR 1.16, 95% CI 0.79 to 1.71; 99 participants; 1 study; very low-certainty evidence), diphencyprone plus topical minoxidil versus diphencyprone (RR 0.67, 95% CI 0.13 to 3.44; 30 participants; 1 study; very low-certainty evidence), topical minoxidil 1% and 2% versus placebo (RR 2.31, 95% CI 1.34 to 3.96; 202 participants; 2 studies; very low-certainty evidence) and cryotherapy versus fractional CO2 laser (RR 0.31, 95% CI 0.11 to 0.86; 80 participants; 1 study; very low-certainty evidence). The evidence suggests oral betamethasone may increase short-term hair regrowth ≥ 75% compared to prednisolone or azathioprine (RR 1.67, 95% CI 0.96 to 2.88; 80 participants; 2 studies; low-certainty evidence). There may be little to no difference between subcutaneous dupilumab and placebo in short-term hair regrowth ≥ 75% (RR 3.59, 95% CI 0.19 to 66.22; 60 participants; 1 study; low-certainty evidence) as well as between topical ruxolitinib and placebo (RR 5.00, 95% CI 0.25 to 100.89; 78 participants; 1 study; low-certainty evidence). However, baricitinib results in an increase in short-term hair regrowth ≥ 75% when compared to placebo (RR 7.54, 95% CI 3.90 to 14.58; 1200 participants; 2 studies; high-certainty evidence). For the incidence of serious adverse events, the evidence is very uncertain about the effect of topical ruxolitinib versus placebo (RR 0.33, 95% CI 0.01 to 7.94; 78 participants; 1 study; very low-certainty evidence). Baricitinib and apremilast may result in little to no difference in the incidence of serious adverse events versus placebo (RR 1.47, 95% CI 0.60 to 3.60; 1224 participants; 3 studies; low-certainty evidence). The same result is observed for subcutaneous dupilumab compared to placebo (RR 1.54, 95% CI 0.07 to 36.11; 60 participants; 1 study; low-certainty evidence). For health-related quality of life, the evidence is very uncertain about the effect of oral cyclosporine compared to placebo (MD 0.01, 95% CI -0.04 to 0.07; very low-certainty evidence). Baricitinib results in an increase in long-term hair regrowth ≥ 75% compared to placebo (RR 8.49, 95% CI 4.70 to 15.34; 1200 participants; 2 studies; high-certainty evidence). Regarding the risk of bias, the most relevant issues were the lack of details about randomisation and allocation concealment, the limited efforts to keep patients and assessors unaware of the assigned intervention, and losses to follow-up., Authors' Conclusions: We found that treatment with baricitinib results in an increase in short- and long-term hair regrowth compared to placebo. Although we found inconclusive results for the risk of serious adverse effects with baricitinib, the reported small incidence of serious adverse events in the baricitinib arm should be balanced with the expected benefits. We also found that the impact of other treatments on hair regrowth is very uncertain. Evidence for health-related quality of life is still scant., (Copyright © 2023 The Cochrane Collaboration. Published by John Wiley & Sons, Ltd.)

Introduction: During the pandemic, it has been recommended that vaccination against COVID-19 be a priority for patients with cancer; however, these patients were not included in the initial studies evaluating the available vaccines. Objective: To define the impact of vaccination against COVID-19 in preventing the risk of complications associated with the infection in a cohort of patients with cancer in Colombia. Methods: An analytical observational cohort study, based on national registry of patients with cancer and COVID 19 infection ACHOC-C19, was done. The data was collected from June 2021, until October 2021. Inclusion criteria were: Patients older than 18 years with cancer diagnosis and confirmed COVID-19 infection. Data from the unvaccinated and vaccinated cohorts were compared. Outcomes evaluated included all-cause mortality within 30 days of COVID-19 diagnosis, hospitalization, and need for mechanical ventilation. The estimation of the effect was made through the relative risk (RR), the absolute risk reduction (ARR) and the number needed to treat (NNT). Multivariate analysis was performed using generalized linear models. Results : 896 patients were included, of whom 470 were older than 60 years (52.4%) and 59% were women (n=530). 172 patients were recruited in the vaccinated cohort and 724 in the non-vaccinated cohort (ratio: 1 to 4.2). The cumulative incidence of clinical outcomes among the unvaccinated vs vaccinated patients were: for hospitalization 42% (95% CI: 38.7%-46.1%) vs 29%; (95% CI: 22.4%-36.5%); for invasive mechanical ventilation requirement 8.4% (n=61) vs 4.6% (n=8) and for mortality from all causes 17% (n=123) vs 4.65% (n=8). Conclusion: In our population, unvaccinated patients with cancer have an increased risk of complications for COVID -19 infection, as hospitalization, mechanical ventilation, and mortality. It is highly recommended to actively promote the vaccination among this population., Competing Interests: Competing Interests: The authors have declared that no competing interest exists., (© The author(s).)

To describe the population with early malignant melanoma, we performed a cohort study on the basis of the Epidemiological Registry of Malignant Melanoma in Colombia-Asociacion Colombiana de Hematologia y Oncologia. From January 2011 until December 2021, 759 patients were included; the average age was 66 years, 57% were women, acral lentiginous histology was found in 27.8% of patients, and the median follow-up was 36.5 months. The prognostic factors for overall survival in our population are Eastern Cooperative Oncology Group 3-4 (hazard ratio [HR], 13.8), stage III (HR, 5.07), received radiotherapy (HR, 3.38), ulceration on histology (HR, 2.68), chronic sun exposure (HR, 2.3), low income (HR, 2.04), previous local surgery (HR, 0.27), and have received adjuvant treatment (HR, 0.41).

Introduction: Rheumatoid arthritis is a chronic inflammatory disease diagnosed in a productive stage of life. Patients with RA experience changes in their musculoskeletal system, overall health and quality of life. It has been identified that patients with RA do not have appropriate knowledge about their condition. Educational programs can provide new knowledge, accompaniment, and closer follow-up to improve empowerment and quality of life in patients with RA., Purpose: To describe rheumatoid arthritis patients' experiences, perceptions, and expectations when enrolling on a multicomponent educational program in a specialized RA setting., Patients and Methods: A qualitative study was done. Patients with RA who attended a specialized center and enrolled in an educational program participated in two focus groups. The focus group discussions and the interviews were recorded, transcribed verbatim, analyzed, and emerging themes were constructed., Results: Thirty-one participants were included in the focus groups. The median age was 60 years IQR (54-67), 92% were female. Two relevant categories emerged: first, the experience of being diagnosed with RA. Second, the program's ability to empower participants with knowledge and the possibility of transferring knowledge to other patients with the same condition. In addition, patients gave a high score to the expectations regarding the educational program., Conclusion: Understanding patients' expectations when enrolling in an educational program allows educators and clinicians to understand their motivations to create tailored programs that can contribute to acquiring empowerment in the educational process and managing their disease. Stakeholders should consider patients' expectations when implementing these interventions for patients with RA to adapt the intervention according to the patient's context and needs, which will directly affect the patient's adherence and lead to better use and allocation of resources for educational activities., Competing Interests: PSM has received financial compensation for conferences, counselling, advisory boards, and travel. It also has received financial support to attend academic events and project funding from AbbVie, Abbott, Biopas-UCB, Bristol, Janssen, Lilly, Pfizer, Roche, and Sanofi. RACM, DBG, AAV, JDG, FRF and GSV have no conflicts of interest in this work., (© 2023 Castiblanco-Montañez et al.)

Purpose: To assess, in a cohort of patients with rheumatoid arthritis (RA) treated with subcutaneous antitumor necrosis factor drugs (anti-TNFs), the levels of treatment adherence before and after implementing a comprehensive care model (CCM)., Patients and Methods: An observational study including RA patients under treatment with subcutaneous anti-TNFs (adalimumab, etanercept, and golimumab) selected at convenience was performed; a sample size of 125 patients was calculated. The outcome variable was adherence assessed with the Compliance Questionnaire on Rheumatology (CQR19), measured before and after implementing a CCM. Descriptive and bivariate analyses were performed comparing adherence before and after applying the model (Wilcoxon and McNemar's Chi 2 test). For multivariate analysis, a generalized linear model adjusted for covariates was performed, where the difference in the proportion of adherence was the outcome measure., Results: A total of 131 RA patients were followed-up for 24 months; average age was 62 years, and 83.9% were women. The median of DAS28 at the beginning of the follow-up was 2.32, and the HAQ was 0.25. At baseline, 87.8% were adherent; after 24 months, 96.2% were adherent according to CQR19. At the end of follow-up, adherence increased with the three types of anti-TNFs treatment. In a matched model adjusted for clinical variables, the CCM was estimated to produce a 9.4% increase in the total percentage of adherent patients. Additionally, a statistically significant increase of 4.5% in the percentage of adherent patients treated with golimumab compared with etanercept and adalimumab was found., Conclusion: A CCM produced an important increase in the percentage of patients with rheumatoid arthritis adherent to treatment after 24 months of follow-up. It is noteworthy that Golimumab patients were more adherent when compared with other current anti-TNFs treatments., Competing Interests: PSM has received fees for conferences, counseling, advisory boards, and travel to academic meetings expenses and research grants in the last 5 years from Janssen, AbbVie, Biopass-UCB, Bristol, Lilly, Pfizer, Roche, Tecnofarma, and Sanofi. Dr Omar-Javier Calixto reports being a former employee of Janssen Cilag during the conduct of the study. Dr Adriana Rojas-Villarraga reports fees for conferences from AbbVie, from Amgen, from Biopas, from Bristol, from Janssen, from Pfizer, and fees for conferences and advisory board from Glaxo outside the submitted work. The other authors declare that they have no known competing commercial, financial interests or personal relationships that could have appeared to influence the work reported in this manuscript., (© 2022 Santos-Moreno et al.)

Background: Multidisciplinary care (MDC) remains a cornerstone for breast cancer management as it is associated with improved quality of care and patient outcomes. However, the adoption of MDC practice is heterogeneous and has been poorly explored in Latin America. The objective was to describe barriers and possible facilitators for providing MDC to breast cancer patients in five Latin American countries., Methods: A panel of experts with an active clinical practice in Bolivia, Colombia, Ecuador, Mexico, and Uruguay was convened to identify barriers and facilitators to MDC. This study is a qualitative synthesis of a structured discussion regarding the state of MDC in the setting of breast cancer., Findings: Experts recognized that most oncology practices in Latin America do not apply a multidisciplinary approach for breast cancer patients. Predominant barriers for MDC are fragmentation of health services, being understaffed, inadequate infrastructure, and geographic disparities. Access to MDC varies widely in the region, with significant heterogeneity documented within countries. MDC practice was described as being more common in the private sector in Ecuador and Uruguay, while it is more widely implemented in public institutions of Colombia and Bolivia., Interpretation: Establishing quality MDC remains a challenge for oncology practices in Latin America. Addressing regional issues and identifying specific local needs is warranted to encourage the adoption of an effective multidisciplinary approach and, consequently, improve clinical outcomes. Active involvement of all stakeholders is required to build locally solutions and should involve institutions, health professionals, and patients., Funding: Research was funded by Productos Roche S.A., Competing Interests: Productos Roche S.A funded the research group activities, including design, data collection, and analysis, but they did not intervene and stay sidelines of the carried-out activities. CB reports grants from: Pfizer, Pharma Mar, Polyphor, Henlius Biotech, Shanghai, Merck KGaA, Millennium, LEO Pharma, ImClone Systems, Exelixis, Medivation, Asana Biosciences, AB Science, Abraxis Biosciences, Daiichi Sankyo, Bristol-Myers Squibb, BioMarin, Astellas Pharma, AbbVie, Merck (MSD), Merrimack, Mylan, Taiho Pharmaceutical, Sanofi, GlaxoSmithKline, Roche/Genentech, Lilly, Boehringer Ingelheim, Novartis, AstraZeneca, Amgen, Pfizer. Personal fees from Boehringer-Ingelheim, Sanofi, Lilly, Zodiac, Astra Zeneca, MSD, Bayer, Eisai, Roche/Genentech, Pfizer, Novartis, GSK. Stocks from: MedSIR, Biomarker, Tummi. CVG reports grants from: Productos ROCHE SA, AstraZeneca, grants and personal fees from Roche, personal fees from Novartis, Pfizer, Lilly, Myriad Genetics. GSV, AO, MAL, AMB, ASF, CAC: None to declare., (© 2022 The Authors.)

Objective: To compare the clinical response at 24 months and evaluate the adverse events (AEs) of patients with rheumatoid arthritis (RA) treated with etanercept 50 (injectable solution 50 mg prefilled syringe), etanercept 25 (lyophilized 25 mg), infliximab, adalimumab, or golimumab., Methods: A cohort study was carried out in patients with RA, in treatment with etanercept (injectable solution 50 mg prefilled syringe or lyophilized 25 mg), infliximab, adalimumab, or golimumab. Duration of study: follow-up was carried out for 24 months. The difference of initial and final 28-joint Disease Activity Score, remission incidence, difference of initial and final Health Assessment Questionnaire score, disability recovery, and AE rate were evaluated., Results: The study enrolled 435 patients (108 adalimumab, 107 infliximab, 92 etanercept 25 mg, 81 etanercept 50 mg, and 47 golimumab). For etanercept 50, the median difference between basal and at the end of follow-up 28-joint Disease Activity Score was 1.7. For golimumab, it was 1.4; for adalimumab, it was 1.1; for etanercept 25, it was 1.02; and for infliximab, it was 0.96 (p = 0.001). The median difference between basal and final Health Assessment Questionnaire ranged was 1.66 for etanercept 50, 1.34 for etanercept 25, 1.3 for golimumab, 1.24 for adalimumab, and 1.07 for infliximab (p = 0.0005). Comparatively, etanercept 50 presented the highest cumulative incidence (77%; 95% confidence interval [CI], 67%-86%) and remission incidence (64 cases per 100 person-months; 95% CI, 4.9-8.1 cases per 100 person-months) and the lowest AE rate (8.6 per 100 person-years; 95% CI, 5.3-15 per 100 person-years)., Conclusions: In patients with RA treated with anti-tumor necrosis factor α drugs, the highest incidence of remission and the lowest rate of AEs were documented for the cohort exposed to etanercept 50 mg.

Background: In Colombia, hemophilia is considered a high-cost disease, and hemophilia A with high-titer inhibitors may be responsible for a significant economic pressure on the Colombian health system., Objectives: To estimate the direct cost of care for patients with hemophilia A with high-titer inhibitors in Colombia, from the perspective of the health system., Methods: A cost-of-illness study was carried out using standard case methodology, which was designed based on literature review and validation by expert consensus. Scenarios were established for adults and children, including cases of prophylaxis, immune tolerance induction, bleeding, and surgery. The frequencies were taken from the official report for Colombia, issued by the High-Cost Account 2017 (reported 2018). The prices were obtained from the list of regulated medicines in the country. The cost estimate is presented with a range of values by weight (between 10 kg and 90 kg)., Results: The total estimated cost per year for Colombia was US $44 905 252 (between US $32 260 497 and US $58 202 393). The average cost per year calculated for a patient was US $498 947 (between US $358 450 and US $646 693). A total of 99.8% of the estimated cost was directly related to the cost of the coagulation factors and bypassing agents., Conclusions: Hemophilia A with high-titer inhibitors is a disease that generates significant pressure on the Colombian health system, mainly linked to the cost of factors and bypassing agents., (Copyright © 2019 ISPOR--The professional society for health economics and outcomes research. Published by Elsevier Inc. All rights reserved.)

To estimate the cost-effectiveness of available diagnosis alternatives for Mucosal Leishmaniasis (ML) in Colombian suspected patients. A simulation model of the disease's natural history was built with a decision tree and Markov models. The model´s parameters were identified by systematic review and validated by expert consensus. A bottom-up cost analysis to estimate the costs of diagnostic strategies and treatment per case was performed by reviewing 48 clinical records of patients diagnosed with ML. The diagnostic strategies compared were as follows: 1) no diagnosis; 2) parasite culture, biopsy, indirect immunofluorescence assay (IFA), and Montenegro skin test (MST) combined ; 3) parasite culture, biopsy, and IFA combined; 4) PCR-miniexon; and 5) PCR-kDNA. Three scenarios were modeled in patients with ML clinical suspicion, according to ML prevalence scenarios: high, medium and low. Adjusted sensitivity and specificity parameters of a combination of diagnostic tests were estimated with a discrete event simulation (DES) model. For each alternative, the costs and health outcomes were estimated. The time horizon was life expectancy, considering the average age at diagnosis of 31 years. Incremental cost-effectiveness ratios (ICERs) were calculated per Disability Life Year (DALY) avoided, and deterministic and probabilistic sensitivity analyses were performed. A threshold of willingness to pay (WTP) of three-time gross domestic product per capita (GDPpc) (US$ 15,795) and a discount rate of 3% was considered. The analysis perspective was the third payer (Health System). All costs were reported in American dollars as of 2015. PCR- kDNA was the cost-effective alternative in clinical suspicion levels: low, medium and high with ICERs of US$ 7,909.39, US$ 5,559.33 and US$ 4,458.92 per DALY avoided, respectively. ML diagnostic tests based on PCR are cost-effective strategies, regardless of the level of clinical suspicion. PCR-kDNA was the most cost-effective strategy in the competitive scenario with the parameters included in the present model., Competing Interests: The authors have declared that no competing interests exist.

Objectives: Describing and understanding the experiences of people suffering non-melanoma skin cancer in their struggles to recuperate, deciphering their itinerary regarding their health-seeking behavior, describing the relationship between patients and the Colombian healthcare system by referring to the number of pertinent writs and the percentage of denied services, and documenting the determinants which are related to timely diagnosis., Methods: This was a mixed-methods study, combining epidemiology and critical medical anthropology; the study involved a retrospective cohort of 369 people, 3 focus groups including 48 participants and in-depth interviews regarding 20 cases., Results: The data revealed specific healthcare system-related barriers to access to healthcare, intermediate barriers (work-related and geographical) and structural barriers (economic-, income-, purchasing power-, social cohesion- and education-related). Timely diagnosis was made in 32.5% of the reported cases. Related determinants consisted of educational level equal to or above technical training (OR 4.4), home ownership (OR 4.8), living in an urban area (OR3.5) and contributory regime affiliation (OR 1.9); 28% of the people involved in the study reported that they had been denied access to a service (biopsy, surgery) and the rate of resorting to legal means (i.e. writs) was 5 out of every 100 new cases per year. The itinerary from the time of the appearance of a particular disease to definitive resolution was established., Discussion: People living in unfavorable social conditions were involved in the severest cases and, paradoxically, faced the largest set of barriers to access to healthcare in Colombia. Such barriers extend beyond the healthcare system and will not become resolved solely through healthcare reform.

Objective: Determining the prevalence of HIV infection in patients suffering from cutaneous disease in a national reference center in Colombia., Methods: This was a cross-sectional study of patients aged 18 or older, having cutaneous pathology and no previous HIV diagnosis. The calculated sample size was 1,537 patients. A confirmed case was defined as being that of a patient having positive results in the ELISA and Western blot tests. Prevalence was the number of confirmed cases divided by the total population. The associations were measured by using prevalence ratio., Results: 1,649 patients were enrolled in the study. Our center's prevalence was 1.21 % (20 cases). Molluscum contagiosum and seborrheic dermatitis were the diseases having the highest prevalence of HIV infection which had not been previously diagnosed (3.91 % and 2.05 %, respectively). Molluscum contagiosum and HIV infection prevalence ratio was 3.96 (p: 0.01562)., Conclusions: The risk of HIV infection in patients aged 18 or older suffering from Molluscum contagiosum was nearly 4 times higher than the risk in patients having other cutaneous pathologies.

Skin cancer cases were identified from 2003-2005 to ascertain the epidemiological profile and incidence of skin cancer at the Centro Dermatológico Federico Lleras Acosta-Colombia. 168,659 confirmed diagnoses were registered between 2003 and 2005, 2,184 corresponding to skin cancer. Basal cell carcinoma increased from 4 per 1,000 in 2003 to 11 per 1,000 in 2005. Patients suffering from squamous cell carcinoma increased from 1 per 1,000 in 2003 to 3 per 1,000 in 2005. Cases of melanoma increased from 2.7 per 10,000 in 2003 to 13 per 10,000 in 2005.