Solitary keratoacanthoma of the conjunctiva: report of a case.

Keratoacanthoma characteristically occurs on the skin and is rarely found in the conjunctiva. We, herein, report a case of a healthy 41-year-old Thai woman presenting with a rapidly growing conjunctival mass. The tumor was excised to exclude squamous cell carcinoma. Histopathology revealed a cup shaped well-circumscribed proliferation of squamous cells, with a central keratin crater, consistent with a keratoacanthoma. On the literature review, only 12 cases have previously been reported in the English language. The mean age of presentation was 40.75 years, with a male preponderance. Presentation of a mass was mostly within 4 weeks after onset. History of foreign material getting into the eye was positive in 5 cases. All cases were successfully treated by excision, except for one case in which malignancy transformation was found, and enucleation was required eventually. Conjunctival keratoacanthoma is a rare disease. However, this lesion should be well recognized and not misinterpreted as malignancy. As far as we are aware, this is the first report of conjunctival keratoacanthoma from this region.

Primary conjunctival tuberculoma: a case report.

Conjunctival tuberculoma is very rare in modern medicine. We report a case of a 34-year-old Thai female patient presenting with multiple peculiar conjunctival nodules. Two small nodules were excised and submitted for histopathological study, which showed discrete granulomatous inflammation with caseating necrosis. The acid-fast bacilli's staining for tuberculous bacteria was positive. There was no other organ involvement of active tuberculosis. The patient was then treated with systemic anti-tuberculous regimen for 6 months. The remaining lesions disappeared within the first few months of treatment. Conjunctival tuberculoma should always be considered in cases of conjunctival nodules.