Primary ductal adenocarcinoma of the lacrimal gland.

The morphological similarity of salivary and lacrimal gland tumors is known. Many clinicopathological studies and characteristics of salivary duct carcinoma, which bears histological similarities to mammary duct carcinoma, have been recently reported; however, only one case of lacrimal duct carcinoma is reported. A second case of lacrimal duct carcinoma is presented. A 67-year-old male with a painless mass in the right upper eyelid underwent total removal of the tumor mass. Microscopic examination of the tumor mass revealed ductal adenocarcinoma of the lacrimal gland, which was the equivalent of salivary duct carcinoma. The immunohistological studies of the lacrimal duct carcinoma showed similar results to those reported for salivary duct carcinoma. The recurrent tumor in the subdural spaces was removed 2 years after the initial surgery and the patient is followed as an outpatient.