患儿:女,1.5岁。因发现左臀部渐进性增大的肿块三周余,于1985年9月3日住院。体检:发育营养一般。左腹股沟区扪及二枚黄豆大小肿大淋巴结,质中等,触痛(±),心肺腹部无异常发现。左臀部近肛门缘处明显隆起,皮下静脉轻度怒张,局部触及一鸡蛋大小的硬性肿块,界不清,固定。穿刺阴性。x线平片未发现肿块阴影及钙化斑点。入院后3日拟诊“肉瘤”。在氯胺酮麻醉下手术。术中见肿块与肌组织、尾骨尖等广泛浸润粘着,内侧面溃破似烂鱼肉样,遂将此一并切除。病理检查:肿瘤约 7×4×3cm~3,无包膜,部面呈灰白色,间有小片溃烂。镜下见瘤组织呈典型双相分化图象,并被纤维组织梁索分隔为多个小 Children: Female, 1.5 years old. The patient who was found to have progressively enlarged left hips for more than three weeks was hospitalized on September 3, 1985. Physical examination: General development and nutrition. The left inguinal region and two soy-sized enlarged lymph nodes were of medium quality, tenderness (±), and no abnormalities were found in the heart and lung abdomen. The left buttock was obviously uplifted near the anal border. The subcutaneous veins engulfed slightly and partially touched an egg-sized hard mass. The border was unclear and fixed. Puncture negative. X-rays showed no lump shadows and calcified spots. On the 3rd day after admission, he was diagnosed as “sarcoma.” Surgery under ketamine anesthesia. During the operation, the tumor was extensively infiltrated with musculature and coccyx, and the inner surface was ulcerated like rotten fish. The fistula was removed. Pathological examination: The tumor was about 7 × 4 × 3cm ~ 3, no capsule, the surface was pale, with small pieces of ulceration. Under the microscope, the tumor tissue showed a typical biphasic differentiation image and was separated into several small pieces by fibrous tissue cables.