腺泡状软组织肉瘤为不常见的一种软组织恶性肿瘤,其组织发生尚不明确。好发于四肢深部肌肉内或肌肉筋膜处,其它部位如肛门旁区、腹壁、腹膜后,眼眶、舌和口底等处,乳房处极为罕见。我院于去年发现一例乳房深部腺泡状软组织肉瘤,现报告如下: 杨××,女,18岁,住院号213390,19 Alveolar soft tissue sarcoma is an uncommon malignant tumor of soft tissue. Its histogenesis is not yet clear. Occurs in the deep muscles of the extremities or at the muscle fascia. Other sites such as the anal area, abdominal wall, retroperitoneum, eyelids, tongue, and floor of the mouth are extremely rare at the breast. A case of deep alveolar soft tissue sarcoma was found in our hospital last year. The report is as follows: Yang ××, female, 18 years old, hospital number 213390, 19