Gastric lipoma and pyloric obstruction in a 51-year-old woman.

Gastric lipoma is considered a rare condition that may constitute a challenging diagnosis. A 51-year-old woman presented dysphagia and abdominal pain, and an upper digestive endoscopic study disclosed a gastric tumor located in the submucosa of the pyloric antrum. Conclusive diagnosis was established after repeated endoscopic biopsies, and the patient was subjected to an atypical gastrectomy, which evolved into a pyloric stenosis. This complication was appropriately corrected and the patient remains symptomless, under outpatient surveillance.

[Peripheral neuropathy possibly caused by amiodarone therapy]. / Amiodarona como provável etiologia de neuropatia periférica.

A 67 years-old man under amiodarone treatment for thirteen months due to a cardiac arrhythmia developed a mixed sensory-motor neuropathy. Proper diagnosis and withdrawal of the offending drug prompted marked improvement within months of his neurological dysfunction.

[Mitral valve prolapse as a probable cause of cerebral ischemia. A case report]. / Prolapso da valva mitral como provável etiologia de isquemia cerebral. Relato de caso.

A 32 year old female patient, documented clinically and echocardiographically to have a competent prolapse of the mitral valve (MVP), developed a sudden ischemic cerebrovascular accident (CVA), suggestive of embolism. There were no predisposing factors to cerebrovascular disease, except for past use of contraceptive pills. Tomographic study disclosed an ischemic right-parietal "wedge-shaped" defect. The patients's recovery, with physiotherapy and AAS, was satisfactory. The authors discuss the association of MVP and CVA, considering physiopathogenic, prophylactic and therapeutic aspects, emphasizing the need to consider MVP as a cause of CVA in young adults.

Lesöes cardíacas em ratos Wistar inoculados com diferentes cepas do Trypanosoma cruzi / Cardiac lesions in Wistar rats infected with different strains of Trypanosoma cruzi

Ratos albinos Wistar infectados com diferentes inóculos das cepas Y, Colombiana (COL) e Säo Felipe (12SF) do Trypanosoma cruzi desenvolveram parasitemia elevada entre 14 e 21 dias, a qual tornou-se desprezível ou desapareceu completamente ao final da 4ª semana. As lesöes do coraçäo foram avaliadas, semiquantitativamente, pelo sistema de "scores", conforme a intensidade e a extensäo da inflamaçäo, nas diferentes estruturas do órgäo, tendo sido observado que: a) na fase inicial (aguda) da infecçäo, os animais mortos espontaneamente ou em conseqüência do acidente anestésico apresentaram cardite de intensidade moderada a acentuada, näo havendo diferença em relaçäo as cepas utilizadas; as diferentes estruturas do coraçäo estavam uniformemente comprometidas; b) na fase crônica da infecçäo observou-se cardite de grau leve a moderado e as lesöes foram mais freqüentes e intensas quanto maior o inóculo empregado; no entanto, inóculos baixos só produziram lesöes quando a cepa utilizada foi a Colombiana. Trombose mural nos átrios e dilataçäo da ponta do ventrículo esquerdo foram observadas em 20% dos animais, independetemente da cepa. Na fase crônica 15% dos animais apresentaram miocardite crônica com fibrose, associada a hipertrofia das miocélulas. Os AA confirmam ser o rato albino suscetível a infeccäo chagásica e, portanto, um modelo útil no estudo das manifestaçöes cardíacas da Doença de Chagas