PMC3728524_01
Computed tomography revealing a 5 cm size heterogeneous mass in the right wall and base of the bladder.
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CT revealed a 5 cm heterogeneous mass in the right wall and base of the bladder (Figure 1). Cystoscopy revealed massive smooth polyp with papillary area on the posterior wall of bladder.
(a) Microscopic overview of the malignant urothelial tumor with epithelial and sarcomatoid components (H-E, x5). (b) Papillary urothelial carcinoma (H-E, x30). (c) Sarcomatoid component of the tumor showing pleomorphic, spindle cells. There is atypical mitotic figure in centre of tumor (H-E, x30). (d) Large size of necrosis in sarcomatoid tumor (H-E, x10).
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fig2
Histology of the tumor was diagnosed as carcinosarcoma composed of biphasic malignant epithelial and mesenchymal elements (Figure 2).