Osseous Choristoma within an Epibulbar Complex Choristoma.

Kim, Jong Wook; Jin, Sin Jung; Rah, Sang Hoon; Cho, Mee Yon

Original Article

Journal of the Korean Ophthalmological Society 1997;38(8):1480-1485.
Published online August 1, 1997.

Osseous Choristoma within an Epibulbar Complex Choristoma.

Jong Wook Kim, Sin Jung Jin, Sang Hoon Rah, Mee Yon Cho

Department of Ophthalmology, Pathology, Yonsei University Wonju College of Medicine.

골조직이 포함된 상공막의 복합분리종 1례

김종욱(Jong Wook Kim),진신정(Sin Jung Jin),라상훈(Sang Hoon Rah),조미연(Mee Yon Cho)

Abstract

Episcleral osseous choristoma is a rare isolated bony nodule occurring in the conjunctival or episcleral connective tissue in eyes which are otherwise normal. They are present at birth. This congenital lesion is usually about the size of a pea and typically located in the superotemporal quadrant, some 5 to 10mm from the limbus. Of the 40 reported cases in the literature, none had associated ocular abnormalities. The diagnosis has seldom been suspected preoperatively. Our patient was 3-month-old healthy male baby. For the cosmetic purpose, we had done excisional biopsy. In the histopathologic study, the mass was a dermoid covered with skin and contained fat, hair follicle and osseous tissue at its center. The mass was confirmed to be a complex choristoma, especially osseous choristoma. We report this case because of the rarity of osseous chroistomas combined with complex choristoma.

Key Words: Episcleral osseous choristoma;dermoid;complex choristoma