The most likely cause of a popliteal mass is a Baker's cyst, but one must consider soft tissue tumors also.

腘窝肿块是最常见的腘窝滑膜囊肿，但是腘窝神经鞘瘤也是需要考虑的一种疾病。

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The WHO classification of soft tissue tumors was first published in 1969 and was revised twice in 1994 and 2002.

世界卫生组织(WHO)对软组织肿瘤所做的分类，最先发表于1969年，并分别于1994与2002年做过修订。

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This article reports ultrasonographic diagnosis in 105 cases of soft tissue tumors proved by operation and pathology.

本文报告应用实时超声探测并为手术和病理证实的105例软组织肿瘤。

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According to the National Coalition Against the Misuse of Pesticides, studies of pesticide harm point to everything from elevated rates of childhood leukemias, soft-tissue sarcomas (aggressive tumors), and brain cancers to childhood asthma and other respiratory problems.

CNN: Children face danger in the schoolyard grass from pesticides