海綿静脈洞症候群と頭蓋骨腫瘤を呈した転移性悪性黒色腫の1例

Malignant Melanoma Metastatic to the Cavernous Sinus and Skull with an Unknown Primary Origin: Report of a case

I．はじめに

　悪性黒色腫で中枢神経系への転移を認める頻度は比較的高いが，その場合にも脳実質への転移が多い^4,5,11）われわれは脳実質内転移を伴わず，海綿静脈洞症候群と頭蓋骨腫瘤を呈して発見された転移性悪性黒色腫の1例を経験したので報告する．

A rare case of malignant melanoma metastatic to the cavernous sinus and skull, with an unknown primary origin, is reported. A 46-year-old man noticed diplopia, It. ptosis and swelling in the parietal and maxillary re-gions. The parietal skull tumor and the maxillary lymph node were excised and histological examination revealed malignant melanoma. Because of its roen-togenological characteristics, the lesion of the caver-nous sinus was also thought to be the site of metastasis of malignant melanoma.

This case is rare because the initial symptom was cavernous sinus syndrome, and no involvement of brain parenchyma was observed.