RESUMO
We report a case of a cardiac myxoma with cartilaginous differentiation. Cardiac myxomas are the most common primary neoplasms of the heart. The cell of origin is thought to be a pluripotential cell called the "myxoma cell," which is capable of differentiating towards various tissues, including endothelial, epithelial, and smooth muscle; however, cartilaginous differentiation is so uncommon that other entities such as metastatic chondrosarcomas must be considered in the differential diagnosis. These entities are discussed along with the radiologic-pathologic correlation.
Assuntos
Neoplasias Cardíacas/patologia , Mixoma/patologia , Idoso , Biomarcadores Tumorais/análise , Cartilagem/patologia , Condrogênese , Ecocardiografia Transesofagiana , Átrios do Coração/química , Átrios do Coração/diagnóstico por imagem , Átrios do Coração/patologia , Neoplasias Cardíacas/química , Neoplasias Cardíacas/diagnóstico por imagem , Humanos , Técnicas Imunoenzimáticas , Masculino , Mixoma/química , Mixoma/diagnóstico por imagemRESUMO
A 5-month-old white boy infant exhibited remarkable growth retardation and subsequently developed ileal obstruction, which was found to be due to solitary intestinal fibromatosis. This rare lesion has an excellent prognosis if it is completely excised. This is in contrast to cases of congenital fibromatosis with multiple lesions, which carries a poor prognosis.
Assuntos
Fibroma/complicações , Neoplasias do Íleo/complicações , Obstrução Intestinal/etiologia , Fibroma/patologia , Humanos , Doenças do Íleo/etiologia , Neoplasias do Íleo/patologia , Lactente , MasculinoRESUMO
Three cases of amyloidosis-like glomerulopathy are presented in which renal amyloidosis was initially diagnosed on the basis of ultrastructural findings, despite negative Congo red staining. The histologic and immunofluorescence findings and, on careful examination, ultrastructural features of this amyloidosis-like glomerulopathy all serve to distinguish it from true amyloidosis. The clinical behavior suggests that it is a primary glomerulopathy since, with time, no other systems become involved.