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Introducción: La ingestión de cuerpo extraño (CE) es frecuente en la infancia, requiriendo en el 10-20% de los casos extracción endoscópica. El objetivo de este trabajo fue analizar las características demográficas, clínicas y endoscópicas de los pacientes con ingesta de CE que requieren manejo endoscópico. Pacientes y Método: Estudio de cohorte prospectivo. Se incluyen los pacientes derivados al servicio de urgencia de Clínica Alemana de Santiago para extracción de cuerpo extraño entre noviembre de 2007-noviembre de 2011. Se registran variables demográficas, clínicas y endoscópicas, clasificando la sintomatología en respiratoria, digestiva y otros. Se evaluaron factores de riesgo y complicaciones. Resultados: 170 pacientes, 52,4% varones, edad promedio de 4 años y 3 meses. En 78,5% la ingestión de CE ocurrió en el hogar, el 82,1% consultó en las primeras 2 h. Los síntomas más comunes post ingestión fueron digestivos, respiratorios y dolor local. La localización del CE fue con radiografía simple en 87,6%. En el 91,8% se extrajo el CE. Localización: 1,3% retrofaríngeo, 69,3% esófago, 23% estómago, 1,9% duodeno, 3,8% distal a duodeno. Los CE más frecuentes fueron los redondos (56,4%) y dentro de ellos las monedas, punzantes (24,1%), pilas (14,7%), imanes (2,9%) y otros de gran tamaño (1,8%). Se encontró lesión de mucosa en el 53,5%, requiriendo hospitalización el 9,8% de los niños. Conclusiones: La ingestión de CE ocurre en el hogar y es más frecuente en pre escolares. El CE más frecuentes fue la moneda. La localización del CE fue con radiografía simple y no hubo fracaso ni complicaciones en la extracción endoscópica. Introduction: The ingestion of a foreign body (FB) is very common in childhood, 10 to 20% of the cases require endoscopic removal. The aim of this study is to analyze the demographic, clinical and endoscopic characteristic of patients with FB ingestion requiring endoscopic management. Patients and Methods: The design corresponded to a Prospective Cohort Study. It included patients referred to the Clinica Alemana ER in Santiago in order to remove foreign bodies from their digestive systems between November 2007 and November 2011. Demographic, clinical and endoscopic characteristics were recorded, classifying the symptoms as respiratory, digestive and other manifestations. Risk factors and complications were evaluated. Results: 170 patients, 52.4 % male with average age of four years and three months old. In 78.5 % of the cases, the FB ingestion occurred at home, 82.1% sought medical attention within two hours from the ingestion. Digestive, respiratory and local pain were among the most common symptoms. The location of the FB took place using simple x-ray in 87.6 % of the cases. 91.8% of the FBs were extracted. Location: retropharyngeal 1.3%, 69.3% esophagus, stomach 23 %, duodenum 1.9 % and 3.8 % distal duodenum. Round FB were the most frequent (56.4%) like coins, sharp objects (24.1%), batteries (14.7%), magnets (2.9%) and other large items (1.8%). Mucosal lesion was found in 53.5% of the cases and 9.8% required hospitalization Conclusions: The ingestion of FB occurred at home, and it is most frequent in preschool children. The most common FB was a coin. The location of the FB was through x-ray and no failure or complications were described during the endoscopic removal.

Introducción: La ingestión de cuerpo extraño (CE) es frecuente en la infancia, requiriendo en el 10-20% de los casos extracción endoscópica. El objetivo de este trabajo fue analizar las características demográficas, clínicas y endoscópicas de los pacientes con ingesta de CE que requieren manejo endoscópico. Pacientes y Método: Estudio de cohorte prospectivo. Se incluyen los pacientes derivados al servicio de urgencia de Clínica Alemana de Santiago para extracción de cuerpo extraño entre noviembre de 2007-noviembre de 2011. Se registran variables demográficas, clínicas y endoscópicas, clasificando la sintomatología en respiratoria, digestiva y otros. Se evaluaron factores de riesgo y complicaciones. Resultados: 170 pacientes, 52,4% varones, edad promedio de 4 años y 3 meses. En 78,5% la ingestión de CE ocurrió en el hogar, el 82,1% consultó en las primeras 2 h. Los síntomas más comunes post ingestión fueron digestivos, respiratorios y dolor local. La localización del CE fue con radiografía simple en 87,6%. En el 91,8% se extrajo el CE. Localización: 1,3% retrofaríngeo, 69,3% esófago, 23% estómago, 1,9% duodeno, 3,8% distal a duodeno. Los CE más frecuentes fueron los redondos (56,4%) y dentro de ellos las monedas, punzantes (24,1%), pilas (14,7%), imanes (2,9%) y otros de gran tamaño (1,8%). Se encontró lesión de mucosa en el 53,5%, requiriendo hospitalización el 9,8% de los niños. Conclusiones: La ingestión de CE ocurre en el hogar y es más frecuente en pre escolares. El CE más frecuentes fue la moneda. La localización del CE fue con radiografía simple y no hubo fracaso ni complicaciones en la extracción endoscópica.

Falla hepática fulminante (FHF) en la infancia se define como evidencia bioquímica de daño hepático, sin antecedentes conocidos de enfermedad hepática crónica, coagulopatía no corregida por la administración de vitamina K e INR superior a 1,5 si el paciente tiene encefalopatía o superior a 2 si no tiene encefalopatía. Objetivo: Presentar la experiencia de un centro de trasplante hepático (TH) en el tratamiento de 8 niños con FHF y revisar la literatura. Pacientes y Método: Revisión retrospectiva de la historia clínica de pacientes con FHF. Resultados: La edad media fue de 8 años, rango 0-11, tres sexo femenino. Cinco pacientes fueron sometidos a TH. Dos pacientes fallecieron, uno de ellos con TH. La etiología fue indeterminada en 4 pacientes, 1 autoinmune, 1 enfermedad de Wilson, 1 parvovirus y 1 rechazo crónico del injerto. Todos los injertos fueron de donante cadáver, 3 de ellos reducidos. Dos de cinco pacientes con encefalopatía grado III-IV fallecieron. La tasa de sobrevida al año fue de 75%. Conclusión: El manejo de la FHF debe realizarse en un centro con capacidad de realizar TH, aunque no todos los pacientes requerirán finalmente esta terapia. El TH debiera ser ofrecido sólo si la enfermedad subyacente es tratable con reemplazo hepático y si el pronóstico del TH es mejor que el de la enfermedad misma.

Sirolimus (SRL) is an immunosuppressive drug increasingly used in children undergoing solid organ transplantation. SRL does not cause glucose intolerance, hypertension, nephrotoxicity or neurotoxicity offering significant potential advantages over calceneurin inhibitors (CM). Aim: To report five children treated with SRL. Material and methods: A retrospective review of four children undergoing orthotopic liver transplantation (OLT) and one undergoing renal transplantation with recurrent acute rejection (RAR), chronic rejection (CR) or toxicity due to CM, treated with SRL between June 2001 and November 2006. Results: As primary immunosuppressive therapy, all patients received 3 drugs: CM (Tacrolimus (FK) or Cyclosporine), mycophenolate mofetil and steroids. Mean age at treatment with SRL was 98 months. Children undergoing OLT had a ¡ate introduction of SRL (mean time after OLT: 37 months), and mean follow-up was 24 months. In this group rescue indications of SRL were RAR in one, CR in one, thrombotic thrombocytopenic purpura (TTP) in one, food allergy in one and other CM toxicity in three. Only one did not experience adverse events due to SRL, but no one required discontinuation of SRL. There were remissions of RAR, CR, TTP and food allergy. The patient with RT was switched from FK to SRL at day 18th after RT, but he had severe neutropenia that led to discontinuation of SRL. Conclusions: SRL may be useful in pediatric solid organ transplant recipients suffering from RAR, CR, TTP, food allergy and CM toxicity. Careful attention should be directed to detect side effects and avoid severe complications

Sirolimus (SRL) is an immunosuppressive drug increasingly used in children undergoing solid organ transplantation. SRL does not cause glucose intolerance, hypertension, nephrotoxicity or neurotoxicity offering significant potential advantages over calceneurin inhibitors (CM). Aim: To report five children treated with SRL. Material and methods: A retrospective review of four children undergoing orthotopic liver transplantation (OLT) and one undergoing renal transplantation with recurrent acute rejection (RAR), chronic rejection (CR) or toxicity due to CM, treated with SRL between June 2001 and November 2006. Results: As primary immunosuppressive therapy, all patients received 3 drugs: CM (Tacrolimus (FK) or Cyclosporine), mycophenolate mofetil and steroids. Mean age at treatment with SRL was 98 months. Children undergoing OLT had a ¡ate introduction of SRL (mean time after OLT: 37 months), and mean follow-up was 24 months. In this group rescue indications of SRL were RAR in one, CR in one, thrombotic thrombocytopenic purpura (TTP) in one, food allergy in one and other CM toxicity in three. Only one did not experience adverse events due to SRL, but no one required discontinuation of SRL. There were remissions of RAR, CR, TTP and food allergy. The patient with RT was switched from FK to SRL at day 18th after RT, but he had severe neutropenia that led to discontinuation of SRL. Conclusions: SRL may be useful in pediatric solid organ transplant recipients suffering from RAR, CR, TTP, food allergy and CM toxicity. Careful attention should be directed to detect side effects and avoid severe complications

Sirolimus (SRL) is a new immunosuppressive drug approved for renal transplantation, but is being used increasingly in orthotopic liver transplantation (OLT). Compared with the calcineurin inhibitors, SRL has different mechanisms of action and side effects profile. Thus, this drug offers significant potential advantages over other immunosuppressive agents. SRL does not cause glucose intolerance, hypertension or renal failure, but it may cause dyslipidemia, hepatic artery thrombosis, thrombocytopenia, anemia, leukopenia, oral mucosa ulcers, edema, arthralgias and wound complications. SRL inhibits the signal of interleukin 2 at a post-receptor level, inhibiting lymphocyte proliferation and fibroblast proliferation. It also has antineoplastic and antifungal effects. We report a 10 years old girl who underwent OLT, experiencing a biopsy-proven recurrent acute rejection (AR) in spite of using three immunosuppressive agents (tacrolimus, mofetil micofenolate and steroids). She developed diabetes mellitus as a consequence of the immunosuppressive therapy. She was rescued with SRL, not experiencing AR again. Mofetil micofenolate, steroids and insulin could be discontinued and tacrolimus doses were reduced, without experiencing severe complications. SRL is a new and safe immunosuppressive agent for rescue in patients with OLT and recurrent AR (Rev Méd Chile 2005; 133: 1221-4)

Background: Celiac patients are at high risk of developing insulin-dependent diabetes mellitus, a condition that has a long pre-diabetic period. During this lapse, anti-islet cell antibodies serve as markers for future disease. This may be related with the duration of the exposure to gluten. Aim: To test the hypothesis that long term adherence to a gluten free diet decreases the frequency of risk markers for insulin dependent diabetes mellitus during adolescence and early adulthood. Patients and methods: 158 celiac patients were classified as: G1, (n=30 patients) studied at the time of diagnosis; G2 (n=97 patients) exposed to gluten as a result of non compliance with the gluten free diet and, G3 (n=31 patients) who had maintained a long term, strict gluten free diet. Isotype IgG anti-islet cell antibodies were detected by indirect immunofluorescence using monkey pancreas; results were reported in Juvenile Diabetes Foundation (JDF) units. Results: Celiac patients exposed to a gluten containing diet had a significantly higher prevalence of anti-islet cell antibodies than those who had been exposed only briefly (p

End stage renal disease is not an absolute contraindication for liver transplantation (LT) in patients with end stage liver disease. Actuarial patient and graft survival are comparable for children and adults who undergo LT alone and liver-kidney transplantation (LKT). The most common indications for LKT are the primary hyperoxaluria type I (PH1) and the liver and renal polycystic disease. We report a 12 years old boy with congenital hepatic fibrosis with severe portal hypertension, encephalopathy and polycystic kidney disease with end stage renal disease on dialysis that underwent LKT. During the second postoperative week, he had a biopsy-proven acute liver and renal rejection, that had a good response to corticosteroids. Thirty days after surgery, the liver biopsy was without rejection. No other complications were observed (Rev Méd Chile 2003; 131: 1309-12)

Background: Endomysium antibodies (EMA) do not detect minor dietary transgressions in patients with celiac disease. Aim: To compare the sensitivity and specificity of tissue transglutaminase antibodies (tTGA) and endomysium antibodies (EMA) in biopsy proven celiac patients at the time of diagnosis and during gluten free diet (GFD). Patients and methods: One hundred fifty three subjects were studied: a) 30 healthy controls; b) 9 cases with cow's milk allergy; c) 24 celiac patients at time of diagnosis; d) 25 celiac patients adhering to the GFD; e) 65 celiac patients with poor/no adhesion to GFD. EMA and tTGA IgA were measured by immunofluorescence and ELISA, respectively. Results: Sensitivity and specificity were 100% and 97.4% for tTGA, respectively. All patients with cow's milk allergy were EMA (-) and 8 of 9 (88.9%) were tTGA (-). In celiac patients not adhering to the GFD, EMA and tTGA positivity were similar (80% and 81,5%, respectively); 95,4% of the subjects tested positive for at least one of them. All patients adhering to GFD were EMA (-) but tTGA were (+) in 28% of them. Conclusions: EMA and tTGA have similar sensitivity and specificity at the time of diagnosis of celiac disease. Positive tTGA in 28% of patients that adhered strictly to the GFD and whose EMA were negative suggest that tTGA may be helpful in detecting minor dietary transgressions and should be further evaluated (Rev Méd Chile 2003; 131: 25-29)

La Hiperplasia Nodular Focal (HNF) del hígado es una tumoración benigna probablemente secundaria a una alteración en la vascularización del parénquima hepático, rara en la edad pediátrica. Objetivo: Reportar un caso clínico de HNF que requirió trasplante hepático ortotópico (THO) y revisar la literatura actual con respecto a la conducta terapéutica a seguir. Caso clínico: Niño de 15 años de edad con una masa abdominal palpable. Ecografía y tomografía axial computada de abdomen demostraron un tumor multifocal en ambos lóbulos hepáticos de características irresecables. Biopsia operatoria del hígado confirmó una HNF. El paciente desarrolló hipertensión portal debido a compresión tumoral de la vena porta, con ascitis, encefalopatía hepática e insuficiencia renal, por lo que se decidió su manejo mediante un THO en injerto total, con una excelente evolución a 5 años de seguimiento. Conclusión: La decisión entre un enfoque conservador o quirúrgico depende de las características de cada caso, siendo el THO una alternativa terapéutica en pacientes con tumores hepáticos benignos e irresecables