[Carcinoma in situ of the conjunctiva bulbi. Clinical and histopathologic findings].

The present paper communicates clinical and pathohistologic findings in a case of carcinoma in situ of the conjunctiva (Bowen's disease) with a five-year course. Initially, there are clinical similarities between Bowen's disease and Mooren's ulcer; the diagnosis can be established on the basis of the histologic findings. In this case the clinical picture at first resembled that of Mooren's ulcer. An epithelial dysplasia was confirmed histologically following perilimbal conjunctivectomy. A year later the dysplasia was found to have progressed and was treated by diathermy coagulation. At the check-up examination three months later the tumor had diminished in size. Four years later, however, it had redeveloped. As a rule, tumor excision is the treatment of choice. In the case described here it was first coagulated by diathermy because of its great extent, but this only brought the tumor to a temporary standstill.