患者，女，６０岁，因左乳癌根治术加局部放疗后１０年。２年前始，左胸前壁近胸骨旁皮肤发红，范围约“核桃大”，无疼痛，逐渐皮肤破溃。曾用抗生素及局部清创换药治疗，其效果不显，逐渐有脓性分泌物溢出，创面扩大。于１９９６年９月１６日门诊“左前胸多根肋软骨炎”... Patients, female, 60 years old, 10 years after radical mastectomy plus local radiotherapy. Two years ago, the skin around the breast near the sternal wall of the left chest was reddened. The area was about “large walnuts”, no pain, and the skin was gradually ulcerated. The use of antibiotics and local debridement dressings had no effect, and there was a gradual overflow of purulent secretions and an enlarged wound surface. On September 16th, 1996 in the outpatient clinic, “Multifracture cartilage of the left anterior chest”...