Surgery, Faculty of Medicine, Chulalongkorn University, Bangkok, Thailand.
Surgery, Faculty of Medicine, Chulalongkorn University, Bangkok, Thailand
BMJ Case Rep. 2022 Aug 19;15(8):e250927. doi: 10.1136/bcr-2022-250927.
Accessory breast occurs due to the persistence of milk line in the non-thoracic region. Malignant transformation in male accessory breast is very rare, with 16 reports documented across the world. No bilateral synchronous accessory male breast cancer has been reported. We present the first case reported globally of a man in his 70s with a complaint of left axillary lump and chronic rash for 3 years. About 1 year ago, additional reddish rash was detected in the right axilla. Initial skin biopsy from a private hospital confirmed mammary carcinoma with skin invasion. Subsequent left breast mastectomy with left axillary lymph node dissection and right wide excision was performed. Final pathological result was grade 2 invasive ductal carcinoma in the left accessory breast and Paget's disease in the contralateral axilla. Postoperative treatment of adjuvant paclitaxel and trastuzumab was prescribed, which was followed by adjuvant radiation therapy.
副乳腺是由于非胸部区域的乳腺线持续存在而发生的。男性副乳腺的恶性转化非常罕见，全世界有 16 例报道。没有双侧同步的男性副乳腺癌的报道。我们报告了首例全球 70 多岁男性的病例，他主诉左腋窝肿块和慢性皮疹 3 年。大约 1 年前，右侧腋窝发现了额外的红斑皮疹。一家私立医院的初始皮肤活检证实为皮肤浸润性乳腺癌。随后进行了左乳房切除术和左腋窝淋巴结清扫术以及右侧广泛切除术。最终的病理结果为左侧副乳腺 2 级浸润性导管癌和对侧腋窝的派杰病。术后给予紫杉醇和曲妥珠单抗辅助治疗，随后进行辅助放疗。
