PDF(Pubmed)
Abstract：
BACKGROUND: Accessory breast (AB) is extra and ectopic breast tissue. Fibroadenoma (FA) in AB is a rare finding. This study aims to present a case of FA in axillary AB mimicking carcinoma of unknown primary (CUP).
METHODS: A 38-year-old female presented with a mass in her right axilla. She had a mass in her right breast for 5 years. She previously had a left breast lumpectomy for a benign condition. The lump in her axilla was palpable and hard. Ultrasound showed an oval lymph node in the level I axilla (12*6mm) with blurred and unclear fatty hilum, suspicious for malignancy. Magnetic resonance imaging revealed an oval lesion (12*7mm) in the level I axilla with no fatty hilum and with heterogeneous enhancements, suggesting abnormal nodes. Fine needle aspiration of the axillary mass suspected CUP. But core biopsy resembled FA. Both masses in the right axilla and breast were surgically excised. Histopathology confirmed FA in both masses.
CONCLUSIONS: Although pathologies in AB are uncommon, it is still susceptible to the same malignant and benign transformations that are found in normal breasts. The axilla is the most frequent location for FA in AB and often affects young women. Imaging techniques can be inconclusive and only histopathology can conclude a definitive diagnosis.
CONCLUSIONS: FA in axillary AB is a rare condition that causes a diagnostic dilemma as it can be mistaken for other benign or malignant pathologies.
METHODS: A 38-year-old female presented with a mass in her right axilla. She had a mass in her right breast for 5 years. She previously had a left breast lumpectomy for a benign condition. The lump in her axilla was palpable and hard. Ultrasound showed an oval lymph node in the level I axilla (12*6mm) with blurred and unclear fatty hilum, suspicious for malignancy. Magnetic resonance imaging revealed an oval lesion (12*7mm) in the level I axilla with no fatty hilum and with heterogeneous enhancements, suggesting abnormal nodes. Fine needle aspiration of the axillary mass suspected CUP. But core biopsy resembled FA. Both masses in the right axilla and breast were surgically excised. Histopathology confirmed FA in both masses.
CONCLUSIONS: Although pathologies in AB are uncommon, it is still susceptible to the same malignant and benign transformations that are found in normal breasts. The axilla is the most frequent location for FA in AB and often affects young women. Imaging techniques can be inconclusive and only histopathology can conclude a definitive diagnosis.
CONCLUSIONS: FA in axillary AB is a rare condition that causes a diagnostic dilemma as it can be mistaken for other benign or malignant pathologies.
摘要：
背景：副乳房（AB）是乳房外和异位组织。纤维腺瘤（FA）在AB是一个罕见的发现。本研究旨在介绍一例模仿不明原发癌（CUP）的腋窝AB中的FA病例。
方法：一名38岁的女性在她的右腋下出现肿块。她的右乳房有5年的肿块。她以前曾因良性疾病而进行过左乳房肿块切除术。她腋下的肿块明显而坚硬。超声显示腋下I级（12*6mm）有一个椭圆形淋巴结，脂肪门模糊不清，怀疑是恶性肿瘤.磁共振成像显示I级腋下有椭圆形病变（12*7mm），无脂肪性门，并有异质性增强。提示异常节点。疑似CUP的腋窝肿块的细针抽吸。但是核心活检类似于FA。手术切除右腋下和乳房的两个肿块。组织病理学证实了两个肿块中的FA。
结论：尽管AB的病变并不常见，它仍然容易受到正常乳房中相同的恶性和良性转化的影响。腋窝是AB中FA最常见的位置，通常会影响年轻女性。成像技术可能是不确定的，只有组织病理学才能得出明确的诊断。
结论：腋窝AB中的FA是一种罕见的疾病，会导致诊断困境，因为它可能被误认为是其他良性或恶性病变。
方法：一名38岁的女性在她的右腋下出现肿块。她的右乳房有5年的肿块。她以前曾因良性疾病而进行过左乳房肿块切除术。她腋下的肿块明显而坚硬。超声显示腋下I级（12*6mm）有一个椭圆形淋巴结，脂肪门模糊不清，怀疑是恶性肿瘤.磁共振成像显示I级腋下有椭圆形病变（12*7mm），无脂肪性门，并有异质性增强。提示异常节点。疑似CUP的腋窝肿块的细针抽吸。但是核心活检类似于FA。手术切除右腋下和乳房的两个肿块。组织病理学证实了两个肿块中的FA。
结论：尽管AB的病变并不常见，它仍然容易受到正常乳房中相同的恶性和良性转化的影响。腋窝是AB中FA最常见的位置，通常会影响年轻女性。成像技术可能是不确定的，只有组织病理学才能得出明确的诊断。
结论：腋窝AB中的FA是一种罕见的疾病，会导致诊断困境，因为它可能被误认为是其他良性或恶性病变。
