Second branchial cleft cyst causing internal jugular vein thrombosis - A case report.

The branchial cleft cyst also known as lateral cervical cyst is usually present in the lateral part of neck deep to sternocleidomastoid muscle at the junction of its upper third and lower two thirds. Branchial cysts are known for repeated infection with sudden increase in size and pain and for its recurrence. Thrombosis of major vessels of neck secondary to recurrent infection and inflammation of branchial cyst is extremely rare. Here we present the first case of internal jugular vein thrombosis; a rare complication seen with branchial cyst in a 54-year-old male. The patient was treated initially with antibiotics followed by excision of cyst and ligation of internal jugular vein without any complication.