Park Seo Young, Lee Jeeyeon, Park Ji Young, Kim Gab Chul, Park Jongmin, Cha Jung Geun, Kim Hye Jung
J Korean Soc Radiol. 2024 Mar;85(2):421-427. doi: 10.3348/jksr.2023.0041. Epub 2024 Jan 10.
Ectopic breast tissue can develop along the mammary ridge from the axilla to the groin, and the most common site is the axillae. Primary carcinoma of ectopic breast tissue is extremely rare. We report a rare case of a 61-year-old woman with a palpable mass in her left axilla who had a history of surgical excision of accessory breast tissue in the same area. Mammography (MMG), including axillary tail view, ultrasound (US), and breast MRI were performed. We evaluated the extent and characteristics of the microcalcifications in the axillary tail view. A US-guided biopsy was done, and histopathology revealed an invasive ductal carcinoma. Enhanced abdominal CT revealed multiple hepatic masses consistent with metastases, and the patient received palliative chemotherapy. Herein, we present a rare case of breast cancer arising from accessory breast tissue in the axilla, best appreciated on the axillary tail view of the patient's MMG.
异位乳腺组织可沿从腋窝至腹股沟的乳腺嵴发展，最常见的部位是腋窝。原发性异位乳腺组织癌极为罕见。我们报告一例罕见病例，一名61岁女性，左腋窝可触及肿块，该区域曾有副乳腺组织手术切除史。进行了包括腋尾部视图的乳腺钼靶摄影（MMG）、超声（US）和乳腺MRI检查。我们评估了腋尾部视图中微钙化的范围和特征。进行了超声引导下活检，组织病理学显示为浸润性导管癌。增强腹部CT显示多个肝脏肿块，符合转移表现，患者接受了姑息性化疗。在此，我们呈现一例罕见的起源于腋窝副乳腺组织的乳腺癌病例，在患者乳腺钼靶摄影的腋尾部视图中最易发现。
