Papillary endothelial hyperplasia of external jugular vein; A rare diagnosis of lateral neck mass

Abstract

Papillary Endothelial Hyperplasia (PEH) is a rare differential diagnosis of a lateral neck mass occur in the head and neck region. A case of Thai male 65 year-old presented with a lateral cord-like neck mass for one week. Imaging studies (USG and CT scan) revealed thrombosis of the external jugular vein with initially unknown etiology. The thrombosed vein was uneventfully excised with a final histopathology report as PEH. This case report described the finding of PEH within the external jugular vein that presented with lateral neck mass, not previously mentioned before in the literature search. Differential diagnosis must be rule out from angiosarcoma due to mimicking pathological character. Complete surgical excision is the treatment of choice.