Sarcomatoid bladder carcinoma is a high-grade neoplasm and accounts for approximately 0,3% of all bladder malignancies. Sarcomatoid carcinoma originates from transitional cells of the bladder. Sarcomatoid carcinoma is charactericed by a epithelial component and a sarcomatoid component, consisting of spindle cells, that is only epithelial marker-positive. We report a 26-year-old woman diagnosed of stage III sarcomatoid bladder carcinoma (T3aN0M0) treated with partial cistectomy followed by 4 cycles of adjuvant chemotherapy with methotrexate, vinblastine, doxorubicin and cisplatin.
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