Desmoplastic Fibroblastoma

**Semantic type:** Neoplastic Process

**Definition:** A rare benign soft tissue neoplasm characterized by the presence of an abundant collagenous or myxocollagenous matrix, spindle-shaped, and stellate-shaped fibroblasts. It usually presents as an asymptomatic, slowly growing subcutaneous mass. The most common sites of involvement are the upper arm, shoulder, and lower limb.

**Synonyms:** - Collagenous Fibroma