Iatrogenic Kaposi Sarcoma Revealed by Acral Nodules With Silent Pulmonary Involvement in Two Patients Treated for Autoimmune Blistering Diseases

两例因自身免疫性大疱性疾病接受治疗的患者，其肢端结节伴无症状肺部受累，最终确诊为医源性卡波西肉瘤