Abstract
Squamous cell carcinoma (SCC) is a malignant tumor of epithelium that shows squamous cell differentiation. It is the second most common cancer of the skin and usually occurs in areas exposed to the sun but it can rarely arise within the conjunctival epithelium with a deep component. We describe a woman with a history of chronic blepharoconjunctivitis unresponsive to topical medications. Examination disclosed a hyperaemic translucent patch with blurred margins of the upper palpebral conjunctiva. Tarsoconjunctival biopsy revealed intraepithelial squamous cell carcinoma. Management consisted of complete tumor excision with removal of the entire posterior lamella of the left upper eyelid and reconstruction. Histopathologic analysis confirmed primary squamous cell carcinoma arising from conjunctival epithelium, involving the underlying tarsus. Patients with unexplained chronic unilateral blepharoconjunctivitis or papillary hypertrophy of the palpebral conjunctiva should be considered for biopsy to rule out neoplasia, even when there is no sign of an evident mass.
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