Contiguous Corneal Delamination for Giant Ocular Surface Squamous Neoplasia

Ocular surface squamous neoplasia (OSSN) is a common conjunctival tumor. It represents the spectrum of conjunctival and corneal squamous epithelial tumors that include conjunctival intraepithelial neoplasia and squamous cell carcinoma. They are often from bulbar conjunctiva but can also arise from fornix and tarsal conjunctiva. Giant OSSNs have been reported in the literature and have been treated with various modalities such as surgery, chemotherapy, chemoreduction, and immunotherapy. A giant OSSN has been defined as a single tumor measuring 15 mm in basal diameter or six limbal clock hours. We here report a case of giant OSSN wrapping 12 o' clock hours of cornea at presentation that underwent complete surgical excision without any residual corneal scar.