대피지
1999;37;11 1659-1663
Nevus
sebaceus is a hamartoma of the skin with the potential to develop benign and maligmant
neoplasms. Trichoblastoma is a benign neoplasm that consists of follicular germinative
cells. We report a case of trichoblastoma arising from nevus sebaceus in a 22-year
old female, who showed a dome-shaped, solitary nodule within yellowish hairless
plaque on the occipital area. Histopathologic findings revealed tumoral lobules
of basaloid cells affecting the full thickeness of the dermis. Some lobules had
at their centers cystic cavities filled with large amounts of melanin. Tumoral lobules
of the deeper part of the neoplasm were surrounded by hyalinized collagen bundles
with immature fibroblast. The overall architectures was reminiscent of hair bulbs. |
