外傷後7年目に発生した前頭骨海綿状血管腫の1手術例

A Case of Posttraumatic Forehead Cavernous Angioma

Ⅰ．はじめに

　骨内の海綿状血管腫は稀な腫瘍であり頭蓋骨に発生するものはさらに稀である^4,7)．また，骨内の海綿状血管腫の多くは先天性である¹⁰⁾．今回われわれは，頭部外傷の際のCTで腫瘍を認めず，その7年後に同部位に海綿状血管腫様の病理所見を有する腫瘍が発生した1例を経験したので若干の文献的考察を加え報告する．

　Cavernous angiomas of the bone are rare tumors. Skull cavernomas are even less frequent. Most cavernous angiomas of the bone are congenital tumors. In a review of the literature,we found only one case report of de novo generation of a skull cavernous angioma. We present a case of a 25-year-old woman who had experienced a head injury,and 7 years later exhibited a skull tumor at the exact region of the injury. We performed tumor resection and cranioplasty. Follow-up examinations revealed no recurrence or neurological defects. Pathological findings showed a cavernous angioma-like lesion with some atypical details. We finally diagnosed the lesion as a de novo cavernous angioma. Our case suggests that fine injury may result in de novo generation of bone cavernomas.