英语语法分析

Lesions with fatty components, such as lipoma, dermoid and lipomatous meningioma.

病变含有脂肪成分，如脂肪瘤、皮样囊肿和脂肪瘤样脑膜瘤。

Histologically, the resected tumor was composed of epithelioid cells, without vascular or lipomatous component, and was characterized by HMB45 positive on immunohistochemistry.

组织学上由单一上皮样细胞构成，不含血管及脂肪成分，免疫组化呈特征性黑色素生成(HMB - 45)阳性。