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Chapter: Ophthalmology: Conjunctiva

Epithelial Conjunctival Tumors

Epithelial Conjunctival Tumors
Conjunctival cysts are harmless and benign.

Epithelial Conjunctival Tumors

Conjunctival Cysts

Conjunctival cysts are harmless and benign. Occurrence is most often post-operative (for example after surgery to correct strabismus), post-traumatic, or spontaneous. They usually take the form of small clear fluid-filled inclu-sions of conjunctival epithelium whose goblet cells secrete into the cyst and not on to the surface (Fig. 4.21). Cysts can lead to a foreign-body sensation and are removed surgically by marsupialization (removal of the upper half of the cyst).

Conjunctival Papilloma

Papillomas are of viral origin (human papillomavirus) and may develop from the bulbar or palpebral conjunctiva. They are benign and do not turn malig-nant. As in the skin, conjunctival papillomas can occur as branching pediculate tumors or as broad-based lesions on the surface of the conjunctiva (Fig. 4.22). Papillomas produce a permanent foreign-body sensation that is annoying to the patient, and the entire lesion should be surgically removed.

Conjunctival Carcinoma

Conjunctival carcinomas are usually whitish, raised, thickened areas of epithelial tissue whose surface forms a plateau. These lesions are usually ker-atinizing squamous cell carcinomas that develop from epithelial dysplasia (precancer) and progress to a carcinoma in situ (Fig. 4.23). Conjunctival carci-nomas must be excised and a cytologic diagnosis obtained, and the patient must undergo postoperative radiation therapy to prevent growth deep into the orbit.


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