A Case of Limbal Complex Choristoma Containing Cartilarge

Choristomas are defined as benign congenital overgrowth of normal tissues in an abnormal location, which can contain lacrimal gland, muscle, cartilarge, adipose tissue, nerve, epidermal appendage. There are many reports about choristoma but cartilarge containing choristoma is very rare. We experienced a 20-year-old healthy male patient complaining of mass on limbus. The diagnosis was limbal dermoid. After tumor removal, histopathologically it was proved as complex choristoma. It contains not only muscular tissue, adipose tissue, neural tissue but also cartilarge. We report this case because of the rarity of cartilarge containing choristoma.

Osseous Choristoma within an Epibulbar Complex Choristoma

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.

The Complex Choristoma with Ectopic Lacrimal Gland in Bilateral Bulbar Conjuntivas

Complex choristoma with a predominance of lacrimal gland tissue is known as unusual congenital and developmental abnormality. Several cases of ectopic lacrimal gland have been reported in Korea. But complex choristoma with ectopic lacrimal gland on both eyes has never been reported. The authors have experienced a case of complex choristoma with ectopic lacrimal gland in lower and lateral quadrant of bulbar conjuntiva on both eyes in a 12-year-old boy.