Complex choristoma of the lacrimal caruncle: a case report of an unusual congenital tumor with clinical and histopathological classification.

Rare congenital tumors can be localized in the peribulbar area. Here we report an unusual case presented in a 3-year-old child with a history of a congenital tumor in the lacrimal caruncle of the right eye, associated with epiphora and constant discomfort. A surgical resection was performed, and the final histopathological diagnosis was lacrimal caruncle complex choristoma. Choristomas are growths of apparently normal tissue in an abnormal location, which can be situated anywhere in the body, including ocular and peribulbar structures. These almost unknown congenital tumors constitute the most common conjunctival tumors in children and can be interpreted clinically as different lesions, which are only differentiated through precise histopathological analysis.