Fibromatosis of the accessory breast mimicking a malignant tumor: a rare case report and literature review

Fibromatosis is a rare neoplasm characterized by fibroblastic and myofibroblastic proliferation. Fibromatosis that occurred in the accessory breast has never been reported in the literature worldwide. We present a case of extra-abdominal fibromatosis of the accessory breast occurring in a 36-year-ol...

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Main Authors: Jing Li, Chaoyi Qi, Yixiao Liu, Jiahuan Xu, Lei Cao, Yanyan Hu, Jian Wang
Format: Article
Language:English
Published: Frontiers Media S.A. 2025-06-01
Series:Frontiers in Oncology
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Online Access:https://www.frontiersin.org/articles/10.3389/fonc.2025.1548521/full
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author Jing Li
Chaoyi Qi
Yixiao Liu
Jiahuan Xu
Lei Cao
Yanyan Hu
Jian Wang
author_facet Jing Li
Chaoyi Qi
Yixiao Liu
Jiahuan Xu
Lei Cao
Yanyan Hu
Jian Wang
author_sort Jing Li
collection DOAJ
description Fibromatosis is a rare neoplasm characterized by fibroblastic and myofibroblastic proliferation. Fibromatosis that occurred in the accessory breast has never been reported in the literature worldwide. We present a case of extra-abdominal fibromatosis of the accessory breast occurring in a 36-year-old Chinese female patient. The tumor was hard with unclear boundaries and adhered to surrounding tissues (6 × 4 × 3 cm). Despite that malignancy was initially suspected based on clinical, ultrasound, and magnetic resonance imaging (MRI) results, histopathology and immunohistochemistry showed an unexpected outcome. At the 2-year postoperative follow-up, there was no recurrence; the prognosis was explained to the patient. This case emphasizes the importance of clinical suspicion and histopathological evaluation and the need to raise awareness to promote early diagnosis and appropriate management of fibromatosis. We also present a literature review of varied presentations and treatment options for extra-abdominal fibromatosis.
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institution OA Journals
issn 2234-943X
language English
publishDate 2025-06-01
publisher Frontiers Media S.A.
record_format Article
series Frontiers in Oncology
spelling doaj-art-4714292474c84d11bc76a99288d88ba22025-08-20T02:36:02ZengFrontiers Media S.A.Frontiers in Oncology2234-943X2025-06-011510.3389/fonc.2025.15485211548521Fibromatosis of the accessory breast mimicking a malignant tumor: a rare case report and literature reviewJing Li0Chaoyi Qi1Yixiao Liu2Jiahuan Xu3Lei Cao4Yanyan Hu5Jian Wang6Taian Hospital of Traditional Chinese Medicine, Shandong University of Traditional Chinese Medicine Affiliated Hospital, Taian, Shandong, ChinaTaian Hospital of Traditional Chinese Medicine, Shandong University of Traditional Chinese Medicine Affiliated Hospital, Taian, Shandong, ChinaAffiliated Taian City Central Hospital of Qingdao University, Taian, Shandong, ChinaAffiliated Taian City Central Hospital of Qingdao University, Taian, Shandong, ChinaAffiliated Taian City Central Hospital of Qingdao University, Taian, Shandong, ChinaAffiliated Taian City Central Hospital of Qingdao University, Taian, Shandong, ChinaAffiliated Taian City Central Hospital of Qingdao University, Taian, Shandong, ChinaFibromatosis is a rare neoplasm characterized by fibroblastic and myofibroblastic proliferation. Fibromatosis that occurred in the accessory breast has never been reported in the literature worldwide. We present a case of extra-abdominal fibromatosis of the accessory breast occurring in a 36-year-old Chinese female patient. The tumor was hard with unclear boundaries and adhered to surrounding tissues (6 × 4 × 3 cm). Despite that malignancy was initially suspected based on clinical, ultrasound, and magnetic resonance imaging (MRI) results, histopathology and immunohistochemistry showed an unexpected outcome. At the 2-year postoperative follow-up, there was no recurrence; the prognosis was explained to the patient. This case emphasizes the importance of clinical suspicion and histopathological evaluation and the need to raise awareness to promote early diagnosis and appropriate management of fibromatosis. We also present a literature review of varied presentations and treatment options for extra-abdominal fibromatosis.https://www.frontiersin.org/articles/10.3389/fonc.2025.1548521/fullextra-abdominal fibromatosiscase reportaccessory breastsurgeryhistopathology
spellingShingle Jing Li
Chaoyi Qi
Yixiao Liu
Jiahuan Xu
Lei Cao
Yanyan Hu
Jian Wang
Fibromatosis of the accessory breast mimicking a malignant tumor: a rare case report and literature review
Frontiers in Oncology
extra-abdominal fibromatosis
case report
accessory breast
surgery
histopathology
title Fibromatosis of the accessory breast mimicking a malignant tumor: a rare case report and literature review
title_full Fibromatosis of the accessory breast mimicking a malignant tumor: a rare case report and literature review
title_fullStr Fibromatosis of the accessory breast mimicking a malignant tumor: a rare case report and literature review
title_full_unstemmed Fibromatosis of the accessory breast mimicking a malignant tumor: a rare case report and literature review
title_short Fibromatosis of the accessory breast mimicking a malignant tumor: a rare case report and literature review
title_sort fibromatosis of the accessory breast mimicking a malignant tumor a rare case report and literature review
topic extra-abdominal fibromatosis
case report
accessory breast
surgery
histopathology
url https://www.frontiersin.org/articles/10.3389/fonc.2025.1548521/full
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AT chaoyiqi fibromatosisoftheaccessorybreastmimickingamalignanttumorararecasereportandliteraturereview
AT yixiaoliu fibromatosisoftheaccessorybreastmimickingamalignanttumorararecasereportandliteraturereview
AT jiahuanxu fibromatosisoftheaccessorybreastmimickingamalignanttumorararecasereportandliteraturereview
AT leicao fibromatosisoftheaccessorybreastmimickingamalignanttumorararecasereportandliteraturereview
AT yanyanhu fibromatosisoftheaccessorybreastmimickingamalignanttumorararecasereportandliteraturereview
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