Desmoplastic Mesothelioma

**Semantic type:** Neoplastic Process

**Definition:** A malignant neoplasm arising from mesothelial cells. It is characterized by the presence of a dense collagenous tissue and atypical neoplastic cells. Sarcomatoid features, collagenous necrosis, and infiltration of muscle and adipose tissue may be present. It occurs in the pleura and less commonly in the peritoneum.

**Synonyms:** - Desmoplastic mesothelioma