Third Branchial Cleft Cyst in an Adult - A Very Rare Entity

Branchial cleft cysts are rare entities that represent abnormal persistence of the branchial apparatus. The most common of these are the second branchial cysts. Third branchial cleft cysts are very uncommon representing only 2 of all the brachial cleft cysts. The presentation is common in infancy or childhood, with adult manifestation unusual. Here we present a case of third branchial cleft cyst in a 30 year old adult. MRI was done to characterise the lesion and the patient underwent complete excision of the cyst.