Primary Invasive Ductal Carcinoma Arising in Axillary Accessory Breast: A Case Report

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 sur...

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Bibliographic Details
Published in:Journal of the Korean Society of Radiology 2024, 85(2), , pp.421-427
Main Authors: Park, Seo Young, Lee, Jeeyeon, Park, Ji Young, Kim, Gab Chul, Park, Jongmin, Cha, Jung Geun, Kim, Hye Jung
Format: Article
Language:English
Subjects:
axilla
breast neoplasm
magnetic resonance imaging
mammography
ultrasound
방사선과학
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Summary: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.
ISSN:2951-0805
2951-0805
DOI:10.3348/jksr.2023.0041