Solitary eccrine spiradenoma of caruncle: A rare occurrence

Abstract

Eccrine spiradenoma (ES), a sweat gland tumor, is rarely found in the caruncle. Although the occurrence of spiradenoma of carbuncle are rare. On account of the histological composition of the caruncle, which includes, in addition to conjunctiva, hair follicles, sebaceous glands, sweat glands, and accessory lacrimal tissue, the caruncle may develop lesions that may be similar to those found in the skin, conjunctiva, or lacrimal gland. We encountered a 39-year-old female with a nodular growth in her left caruncle, which had developed over the last 10 years. Excision biopsy was carried out under local anesthesia. The histopathology was suggestive for a benign ES. Clinical preoperative diagnosis is very difficult for caruncular lesions and is reached only in about half of the cases. Most lesions of the caruncle are benign, mainly nevi. Reported malignant lesions are very rare, but can be potentially fatal. The possibility of sweat gland tumor should be kept in mind in the diagnosis of caruncle tumors.