Pilomatricoma
| Pilomatricoma | |
|---|---|
| Other names | Calcifying epithelioma of Malherbe, Malherbe calcifying epithelioma, and Pilomatrixoma |
| Histopathology of pilomatricoma, high magnification, H&E stain, showing the characteristic components of basaloid cells and ghost cells. | |
| Specialty | Oncology |
Pilomatricoma is a benign skin tumor derived from the hair matrix. These neoplasms are relatively uncommon and typically occur on the scalp, face, and upper extremities. Clinically, pilomatricomas present as a subcutaneous nodule or cyst with unremarkable overlying epidermis that can range in size from 0.5 to 3.0 cm, but the largest reported case was 24 cm.