Choonpa Igaku
Online ISSN : 1881-9311
Print ISSN : 1346-1176
ISSN-L : 1346-1176

This article has now been updated. Please use the final version.

Fibroadenoma in axillary ectopic breast tissue: a case report
Rio ASADAAkiko Iguchi-MANAKAMai OKAZAKIAya UEDAEmika ICHIOKAYukiko TSUSHIMAHiroko BANDOYuzuru KONDOHisato HARA
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JOURNAL RESTRICTED ACCESS Advance online publication

Article ID: JJMU.A.197

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Abstract

Ectopic breast tissue is a common anomaly of the breast that generally presents along the embryonic milk line; however, fibroadenoma of ectopic breast tissue is a rare disease. In this article, we report a rare case of fibroadenoma that developed in the ectopic breast tissue of the right axilla in a 25-year-old Japanese woman. Ultrasonography, fine-needle aspiration cytology (FNAC), and core needle biopsy (CNB) were done, and the mass was diagnosed as fibroadenoma of the ectopic breast tissue. As with normal breast tissue, various breast tumors can develop in ectopic breast tissue. In addition to ectopic breast tumors, axillary tumors need to be further differentiated from metastatic lymph nodes, abscesses, lymphomas, and so forth; thus, it is difficult to diagnose such tumors quickly and accurately. Ultrasonography, cytology, and histology are invaluable for determining the diagnosis and treatment.

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© 2021 The Japan Society of Ultrasonics in Medicine
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