Primary neuroendocrine carcinoma of ocular adnexa.

We present our findings in a case of primary neuroendocrine carcinoma (NEC) of the lacrimal gland and a case of primary Merkel cell carcinoma (MCC) of the eyelid. An 86-year-old man noticed a swelling of the left upper eyelid three months earlier. We performed excision biopsy and histopathological examination indicated that he had a primary NEC of the left lacrimal gland.

Early-stage mucinous sweat gland adenocarcinoma of eyelid.

We present the findings of an early-stage primary mucinous sweat gland adenocarcinoma in the lower eyelid of a Japanese patient. The patient was a 73-year-old man who had had a nodule on the left lower eyelid for two years. He was referred to our hospital with a diagnosis of a swollen chalazion.

A case of squamous cell carcinoma of conjunctiva as initial sign of systemic cancers.

The purpose of this report is to present the findings in a case of squamous cell carcinoma (SCC) of the conjunctiva which was the initial sign of systemic cancers. A 94-year-old woman without known systemic diseases developed a mass in her right conjunctiva. She was referred to our hospital 5 months after the onset.

Case of primary diffuse large B-cell lymphoma of lacrimal sac in a Japanese patient.

The purpose of this study was to determine the characteristics of primary diffuse large B-cell lymphoma (DLBCL) of the lacrimal sac. A 77-year-old man had epiphora of the right eye for three years. After visiting five clinics and hospitals, he was referred to our hospital, and the preoperative magnetic resonance imaging findings suggested a lacrimal sac mass.