Virji Safna Naozer, Vohra Lubna Mushtaque, Abidi Syeda Sakina, Idrees Romana
Department of Surgery, Aga Khan University Hospital, Stadium Road, Karachi, 74800, Pakistan.
Section of Breast Surgery, Department of Surgery, Aga Khan University Hospital, Stadium Road, Karachi, 74800, Pakistan.
Ann Med Surg (Lond). 2022 Aug 5;80:104295. doi: 10.1016/j.amsu.2022.104295. eCollection 2022 Aug.
Fibroadenoma is the most common benign breast tumor among women between 15 and 35 years, however, a fibroadenoma arising from accessory breast tissue is a rare occurrence.
We encountered this uncommon presentation in a 37 years old female with a gradually increasing left axillary lump associated with discomfort. On ultrasound it was a 17.3 mm × 10.6 mm x 17.5 mm well defined solid nodule with internal vascularity, BiRADS IVa lesion. Core biopsy revealed fibroepithelial lesion and the patient electively underwent excisional biopsy. Histopathology confirmed the diagnosis of fibroadenoma, which was completely excised.
Approximately half of all breast lumps in women are diagnosed as fibroadenomas, making it the most common benign breast mass. Nonetheless, an axillary mass has several differentials such as lymphadenopathy, lipoma or sebaceous cyst, while a fibroadenoma developed from ectopic breast tissue in the axilla is an unusual condition. Masses in axilla like ectopic breast tissue are clinically significant as they undergo physiological changes like the normal breast tissue like pain and discomfort during pregnancy, lactation and menstruation. This tissue may also undergo pathological changes and may pose a diagnostic challenge.
Axillary lumps pose a diagnostic dilemma and accessory breast tissue related pathologies should be considered.
纤维腺瘤是15至35岁女性中最常见的乳腺良性肿瘤，然而，起源于副乳腺组织的纤维腺瘤却很少见。
我们遇到了一位37岁女性的这种罕见情况，她左侧腋窝有一个逐渐增大的肿块，并伴有不适感。超声检查显示这是一个17.3毫米×10.6毫米×17.5毫米、边界清晰的实性结节，内部有血管，BI-RADS 4a类病变。粗针活检显示为纤维上皮病变，患者选择接受切除活检。组织病理学确诊为纤维腺瘤，并已将其完全切除。
女性乳腺肿块中约有一半被诊断为纤维腺瘤，使其成为最常见的乳腺良性肿块。然而，腋窝肿块有多种鉴别诊断，如淋巴结病、脂肪瘤或皮脂腺囊肿，而起源于腋窝异位乳腺组织的纤维腺瘤则是一种不寻常的情况。腋窝处类似异位乳腺组织的肿块在临床上具有重要意义，因为它们会像正常乳腺组织一样经历生理变化，如在怀孕、哺乳和月经期间出现疼痛和不适。这种组织也可能发生病理变化，可能带来诊断挑战。
腋窝肿块带来诊断难题，应考虑与副乳腺组织相关的病变。
