本報告要報告一例長在腳底的表皮樣囊腫。一位40歲女性病人因右腳長一個腫瘤來求診。其腫瘤長在腳跟及腳底內側的部位,而其外表為多發性,軟性結節,範圍約7×7公分。起初診斷為囊狀血管瘤,但手術後病理檢查結果為表皮樣囊腫合併破裂及異物反應。表皮樣囊腫是一種常見的皮膚腫瘤。造成的原因多數為外傷,只有少數是先天的。其好發部位是在頭蓋、頸部及軀幹部,而長在腳底乃相當稀少,故一旦發生就會造成診斷上的困擾。這時候正確的診斷必須靠手術及病理診斷。
A rare site for an epidermoid cyst is herein reported. A 40-year-old female was admitted for treatment of a right plantar tumor. The tumor was multiloculated, soft, nodular and in the range of about seven by seven centimeters. We initially diagnosed it as a saccular hemangioma, but it was finally diagnosed as an epidermoid cyst with foreign body reaction from the surgical specimen. Epidermoid cysts can occur in various parts of the body. Trauma is regarded to be the chief cause of them. Due to their various locations and appearance, they are sometimes difficult to diagnose. In such cases, however, it is generally agreed that pathological study is mandatory for a correct diagnosis.