Metastatic carcinoma to the iris. Diagnosis by aqueous paracentesis and response to irradiation and chemotherapy.
Metastatic carcinoma is the most common form of intraocular malignancy. Metastatic carcinoma in the anterior segment is much less common than posterior involvement, and may be confused with uveitis of nonmalignant origin. Two cases of metastatic carcinoma to the iris, with diagnosis by a cytopathologic technique, are reported.