Sindrome de enmascaramiento en un paciente con un linfoma primario del sistema nervioso central / Masquerade syndrome in a patient with a primary central nervous system lymphoma

Se describe el caso de un varón de 37 años con un linfoma primario del sistema nervioso central y con múltiples localizaciones supra e infratentoriales. El paciente presentaba manifestaciones de inflamación intraocular como expresión de su neoplasia intracraneana (síndrome de enmascaramiento) y linfocitopenia ûcon un recuento disminuido de CD4û como representación de una inmunodeficiencia cuya etiología no logramos identificar. El diagnóstico de linfoma se confirmó a través del estudio citológico del humor vítreo. El paciente falleció10 meses después del comienzo de los síntomas.

Surgical indication in Schistosomiasis mansoni portal hypertension - follow-up from 1985 to 2001

The study had the objective to evaluate the benefits of surgical indication for portal hypertension in schistosomiasis patients followed from 1985 to 2001. Schistosoma mansoni eggs were confirmed by at least six stool examinations or rectal biopsy. Clinical examination, abdominal ultrasonography, and digestive endoscopy confirmed the diagnosis of esophageal varices. A hundred and two patients, 61.3 percent male (14-53 years old) were studied. Digestive hemorrhage, hypersplenism, left hypochondrial pain, abdominal discomfort, and hypogonadism were, in a decreasing order, the major signs and symptoms determining surgical indication. Among the surgical techniques employed, either splenectomy associated to splenorenal anastomosis or azigoportal desvascularization, esophageal gastric descompression and esophageal sclerosis were used. Follow-up of patients revealed that, independent on the technique utilized, a 9.9 percent of death occurred, caused mainly by digestive hemorrhage due to the persistence of post-treatment varices. The authors emphasize the benefits of elective surgical indication allowing a normal active life

Study of Schistosoma mansoni isolates from patients with failure of treatment with oxamniquine

After three successive treatments with oxamniquine the continuing elimination of Schistosoma mansoni eggs was observed in patients, who came from various regions of Brazil, with different clinical forms of schistosomiasis. The objective of the present study was to determine the experimental behaviour of five different S. mansoni isolates in Swiss Webster mice that were submitted to treatment with the same drug. The experimental group with failure of treatment showed higher mean number of surviving male worms when it was compared to the group without failure of treatment. These date suggest the possibility of resistance to oxamniquine.

Prognosis of schistosomiasis mansoni patients infected with hepatitis B virus

A clinical study on the evolution of patients with schistosomiasis mansoni conducted since 1983 at the outpatient clinic of the Infectious and Parasitic Disease Service in the Clementino Fraga Filho University Hospital in Rio de Janeiro, Brazil, comparing prevalence of positive tests for HBsAg, anti-HBsAg, and anti-HBc among patients infected with Schistosoma mansoni coming from various regions of Brazil and with different clinical forms of the disease. A non-significant predominance of HBsAg, anti-HBsAg, and anti-HBc was detected among patients with the hepatosplenic form of schistosomiasis, who presented a more severe clinical evolution with a higher frequency of hematemesis and/or melena, in addition to the development of macronodular cirrohosis and a worse prognosis as compared to patients with the toxemic form, schistosomiasis-infection and the hepatointestinal form.

Cirugía refractiva: ficción o realidad? / Refractive surgery: reality or fiction?

La cirugía refractiva es el tratamiento de cualquier vicio de refracción por medio de cirugía. La cirugía refractiva se ha convertido en los últimos años en un procedimiento muy difundido y con aspectos de cierta controversia. La cirugía refractiva ha pasado los límites de la ficción y aparecen ante el médico preguntas que es nuestra intención esclarecer. Nuestro objetivo es explicar el procedimiento quirúrgico y sus resultados. Presentaremos los resultados de este trabajo basado en el tratamiento de más de 3000 casos y su posterior análisis.

Nuestra experiencia con técnicas de identación transitoria / Our experience with transitory identation technics

Presentamos seis casos que hemos tratado con el Balón de Lincoff, realizando identaciones transitorias. El método ha sido efectivo en la mayoría de los casos, con óptima tolerancia por parte de los pacientes. Creemos que este sistema debe ser tenido en cuenta para el tratamiento de pacientes, que presenten desgarro único, o desgarros múltiples, que no estén separados entre sí por más de 6 mm., ni muy lejos del epitelio pigmentario

El uso del YAG-LASER como ayuda de la cirugía extracapsular / Use of neodinium YAG laser as a support of extracapsular surgery

Se presentan 23 casos realizados con cirugía extracapsular de los cuales 9 no usaban lentes intraoculares. En todos los casos se obtuvieron beneficios con el uso del Yag. Un solo caso sufrió un bloqueo pupilar que cedió con un iredectomía com Yag Laser