Benign Outer Hair Sheath and Infundibulum Neoplasm

**Semantic type:** Neoplastic Process

**Definition:** A neoplasm that arises from the outer hair sheath and infundibulum. It is characterized by the absence of atypical or malignant cytological and architectural features, and absence of invasive features or metastatic potential.

**Synonyms:** - Benign Outer Hair Sheath and Infundibulum Tumor