Source:http://linkedlifedata.com/resource/umls/id/C1335519
NCI: A rare morphologic variant of acinar adenocarcinoma of the prostate gland with unfavorable prognosis, 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.