前頸部に発生した小児静脈性血管腫の1症例

Venous Hemangioma of the Neck in a Child:A Case Report

　はじめに

　小児頭頸部腫瘤のなかでとくに前頸部に発生する静脈性血管腫（venous hemangioma：以下VH）の発生頻度は極めて低い^1〜8）。今回著者らは小児頸部VHの1例を経験したので文献的考察を加えて報告する。

A 13-year-old girl presented with a mass in the right cervical region. Since it was gradually enlarg-ing, she visited our department. The mass was hen's egg-sized and ovoid, and located in the medial side of the right sternomastoid muscle. It was found to be compressed, and was enlarged during tension. CT of the neck revealed isodensity and high density, part of which seemed to indicate calcification. Partial enhancement with contrast medium was observed. T2-weighted image of MRI revealed high signal intensity. Angiogram of the neck revealed a shadow of abnormal blood vessel centering of the venous phase. Excision was performed for cosmetic purposes. The tumor was found associated with nutritional blood vessels from the external carotid artery and communicated with the right jugular vein. Histopathological study showed venous hemangioma.