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Introduction: The qualitative elastography by endoscopic echography is a technique to examine the elastic properties of tissues that can distinguish the fibrosis of the tumor by means of color patterns. Objective: To determine the value of elastography by color patterns in the reestadification of the rectum cancer. Methods: An observational and descriptive study (serial cases) of 54 patients with rectum cancer was carried out, who were assisted in the National Center of Minimum Access Surgery, in Havana, between September, 2018 and December, 2022 to whom elastography by endoscopic echography were carried out for the reevaluation of the tumor. To determine the value of this technique the sensibility, specificity, the predictive positive and negative values, the positive and negative true ratio, as well as the index of Youden were calculated. The diagnostic consistency was established according to the kappa index and the histologic study of the sample was the reference standard. Results: The elastography consistency with the pathologic result was good (ĸ=0.84). The specificity and the index of validity were 91.7 and 94.4%, respectively; while the negative predictive value was 84.6%. The 16 patients with mixed elastographic pattern (ye3) had residual tumor located in some of the layers of the rectum wall. The Youden index reached values close to 1. Conclusions: The value of this technique resides in its diagnostic specificity and negative predictive value when differentiating fibrosis from the residual tumor in the rectal wall.

Introduction: considering the high incidence of non-melanomic skin cancer, where treatments with ionizing radiations are used, specifically with the SENSUS SRT-100TM equipment at Cancer Treatment Center of Pinar del Río, and given the need to effectively apply the benefits related to this practice, a retrospective observational study was conducted to discuss the use of aspects related to patients, lesions, administration and application of the treatment machine with a view to increase the benefits of this therapy. Objective: to conduct a retrospective observational study with superficial radiotherapy treatment using SENSUS SRT-100TM equipment, showing the need for the use of the appropriate criteria in order to increase the quality of the service and its efficiency making good use of the resources. Methods: the retrospective observational method was applied, with the target group of patients treated with superficial radiotherapy. Results: 60.3% had received some previous treatment in at least one of their lesions. The 77.8% presented intermediate or high risk of recurrence of the disease and 65% of the schemes were within the recommended therapeutic window of Time-Dose-Fractionation Factors (TDFs). Machine utilization turned out to be low. Conclusions: increasing the use of appropriate criteria and strengthening the training of specialties entrusted with these treatments could improve their quality and efficiency in the use of resources.

Introduction: in view of the high incidence of skin cancer, where treatments with ionizing radiation are used, particularly with SENSUS SRT-100TM equipment at Oncology Patient Care Center of Pinar del Río, and the known need to improve the prevention of incidents and accidents related to this practice, an advanced risk-analysis approach, similar to that proposed by the American Association of Physicists in Medicine, was applied using the SECURE MR-FMEA code. Objective: to develop a risk study for superficial radiotherapy with SENSUS SRT 100TM that identifies the modes and causes of failures associated with the treatment, which allow the use of applications that optimize the safety and quality of the practice. Methods: the prospective method of failure modes and effect analysis, regarding superficial treatments with SENSUS SRT-100TM through the applications developed by means of the SECURE MR-FMEA code. Results: the process map was designed with its sub-processes and respective stages by a multidisciplinary team created at Oncology Patient Care Center in Pinar del Río, assisting the global comprehension of the activity and determining the risk profile and specific failure trees (supported by the benefits of the SECURE MR-FMEA program), to create defense measures and developing activities that decreased the risk after the application of the reassessment. Conclusions: the risk study carried out in superficial radiotherapy made possible to strengthen the safety and quality of the treatments delivered at the Oncology Patient Care Center of Pinar del Río, allowing the future assessments

Se presenta el caso clínico de un paciente de 50 años de edad, quien acudió a la consulta de Oncología del Hospital General Docente “Dr. Juan Bruno Zayas Alfonso” de Santiago de Cuba, por presentar un tumor tímico de 4 meses de evolución. Se le realizó timectomía y linfadenectomía mediastinal, así como una biopsia que indicó la presencia de carcinoma tímico de tipo linfoepitelioma (II) de alto grado de malignidad, estadio IVA; por tal razón se decidió efectuar tratamiento con quimioterapia y radioterapia. Debido a la persistencia del tumor se planificó la segunda línea de quimioterapia, pero el paciente falleció.