fibrosarcoma

noun, plural fi·bro·sar·co·mas, fi·bro·sar·co·ma·ta [fahy-broh-sahr-koh-muh-tuh] /ˌfaɪ broʊ sɑrˈkoʊ mə tə/. Pathology.

1. a sarcoma derived from fibroblast cells, often able to generate collagen.

n.

1. A malignant tumor derived from fibrous connective tissue and characterized by immature proliferating fibroblasts or undifferentiated anaplastic spindle cells.