作者在电镜下观察了2例肌健及腱膜的透明细胞肉瘤,显示了不同的微细结构。基于此种差别,作者建议将该类肿瘤区分为黑色素型及滑膜型。其后,又对这些肿瘤进行了组织学上的对比研究,发现将此类肉瘤区分为黑色素型及滑膜型,是有组织学标准可循的。作者又应用这些组织学标准对存档资料中的11例透明细胞肉瘤进行了复习和分型,8例为黑色素型,1例为滑膜型,另2例不能明确分型。本文观察表明,所谓透明细胞肉瘤,绝大多数实际上是“软组织黑色素瘤”,只有少数属于“滑膜型”。黑色素型透明细胞肉瘤的起源尚不清楚,但能产 The authors observed two cases of clear cell sarcoma of muscle and decidua under electron microscope and showed different micro-structures. Based on this difference, the authors suggest that this type of tumor be classified as melanin and synovial. Later, histological comparisons of these tumors were performed and it was found that the classification of such sarcomas as melanin and synovial was based on histological criteria. The authors also used these histological criteria to review and classify 11 cases of clear cell sarcoma in the archived data, 8 cases were melanin type, 1 case was synovial type, and the other 2 cases could not be clearly typed. This article shows that the so-called clear cell sarcoma, the vast majority is actually “soft tissue melanoma”, only a few belong to the “synovial type.” The origin of melanin-type clear cell sarcoma is not clear, but it can produce