Metastasis to the ciliary body and iris from a parotid carcinoma

Adenoid cystic carcinoma (ACC) of the parotid gland is a relatively rare neoplasm, accounting for 10–15 % of all salivary gland tumors. Metastasis to the uveal region, particularly to the ciliary body and iris, is extremely uncommon, with the first case reported in 2011. This case report describes a 32-year-old woman with a history of ACC of the parotid gland. Despite radical surgery, radiotherapy, and facial nerve reconstruction, the patient developed metastasis to the ciliary body and iris one year after treatment. Ultrasonography revealed a solid iridociliary mass, and radiotherapy was administered. The patient later developed meningeal, hepatic, and bone metastases, leading to her death four years after diagnosis. This report highlights the rarity of uveal metastasis from ACC and the importance of considering metastatic disease in oncology patients presenting with ocular symptoms, as early diagnosis and intervention may improve outcomes and quality of life.