Abstract
69-year-old male had noticed a mass on the right side of his neck but no other symptoms 5 months before visiting our clinic. A careful examination failed to reveal any lesions except for the neck mass which was adherent to the surrounding tissues. The clinical diagnosis was branchiogenic carcinoma and the mass was removed surgically. Cervical lymph nodes were normal. The histopathological diagnosis was squamous cell carcinoma of the inner lining of a cystic lesion. Postoperative radiation therapy (40Gy) was performed. There has been no recurrence.