García García F, García Ligero J, Martínez Díaz F, Rico Galiano J L, Tomás Ros M, Sempere Gutiérrez A, Morga Egea J P, Pérez Carrió J V, Fontana Compiano L O
Servicio de Urología, Hospital General Universitario de Murcia, Murcia.
Actas Urol Esp. 2003 Apr;27(4):317-20. doi: 10.1016/s0210-4806(03)72929-5.
We report a case of neoplasm of the urinary bladder with pseudosarcomatous stromal differentiation. Heterologous carcinosarcomas are extremely rare malignant neoplasms (seventy-eight cases have been previously described). This is a case of carcinoma containing numerous osteoclast type giant cells that stained for vinmentin and acid phosphatase and were negative for cytokeratin and lysozyme.