Ectopic Ocular Tissue in a Mature Cystic Teratoma of Ovary: a Rare Case Report.

Teratomas are tumours developed from germ cell layers, containing derivatives from all three germ cell layers. Mature cystic teratomas are the most common germ cell neoplasms and contain mature elements derived from germ layers. Many previous reports show presence of retinal structures in teratomas. Here we have reported a rare case of mature teratoma of ovary containing corneal, conjunctival, and lenticular structure. A 38-year-old female presented with a 6cm×4cm×3cm echogenic mass involving left ovary. Histopathological examination of the cystectomy specimen showed presence of all three germ cell layer derivatives along with corneal epithelium with prominent goblet cells, conjunctival epithelium, and lenticular structure. The presence of ocular structure in an ovarian mature cystic teratoma is an extremely rare event.