• A female newborn had a cystic, whitish gray mass at the inferotemporal limbus of the left eye. At age 3 weeks, the newborn underwent excision of the tumor, corneal patch grafting, and superior sector optical iridectomy. Histopathologic and electron microscopic examination of the excised tissue revealed a choristoma consisting of cysts lined with respiratory epithelium. To our knowledge, respiratory epithelium in a limbal choristoma has not been previously reported.
Terri L. Young, Ernst R. Büch, Lawrence M. Kaufman, Joel Sugar, Mark O. M. Tso. Respiratory Epithelium in a Cystic Choristoma of the Limbus. Arch Ophthalmol. 1990;108(12):1736–1739. doi:10.1001/archopht.1990.01070140090036