Presentamos un caso de tumor vesical con diferenciación pseudosarcomatosa del estroma. Son extremadamente raros (sólo se había descrito 78 casos en el mundo hasta el año 2001). También son llamados carcinosarcomas heterólogos, dentro de los cuales se encuentran los llamados carcinosarcomas con células gigantes tipo osteoclasto, que se caracterizan por ser positivos para vimentina y fosfatasa ácida y negativos para marcadores epiteliales (citoqueratinas de bajo peso y lisozima). PALABRAS CLAVE: Carcinosarcoma heterólogo. Diferenciación estromal pseudosarcomatosa. Células tipo osteoclasto. ABSTRACT "GIANT OSTEOCLAST TYPE CELL CARCINOMA OF THE URINARY BLADDER. A CASE WITH UNUSUAL PRESENTATION. REWIEW OF THE LITERATURE" We report a case of neoplasm of the urinary bladder with pseudosarcomatous stromal differentiation. Heterologous carcinosarcomas are extremly rare malignant neoplasms (seventy-eight cases have been previonsly described). This is a case of carcinoma containing numerous osteoclast type giant cells that stained for vinmentin and acid phosphatose and were negative for cytokeratin and lysozyme.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.