Prostate Acinar Sarcomatoid Carcinoma

**Semantic type:** Neoplastic Process

**Definition:** A rare acinar adenocarcinoma of the prostate gland with unfavorable prognosis. It is composed of both malignant glandular and sarcomatous components. The sarcomatous component contains a malignant spindle cell proliferation or specific mesenchymal elements including osteosarcoma, chondrosarcoma, and leiomyosarcoma.

**Synonyms:** - Prostate Carcinosarcoma - Prostate Sarcomatoid Carcinoma - Prostate Sarcomatoid acinar adenocarcinoma - Sarcomatoid Carcinoma of Prostate - Sarcomatoid Carcinoma of the Prostate