General Surgery, Florida Atlantic University, Boca Raton, Florida, USA
General Surgery, Florida Atlantic University, Boca Raton, Florida, USA.
BMJ Case Rep. 2021 Apr 8;14(4):e241361. doi: 10.1136/bcr-2020-241361.
Accessory breast tissue (ABT) is found in approximately 2%-6% of the female population and are subject to most of the physiological and pathological changes that occur in pectoral breast. Primary breast cancer occurring in ABT is a rare occurrence and a second primary breast cancer occurring in an accessory breast has never been reported. We report the case of a 60-year-old woman with a history of mastectomy for left breast cancer 5 years prior to presentation, who presented with an enlarging right axilla mass found to be a second primary breast cancer in an accessory tissue on biopsy. Many physicians are unfamiliar with the clinical presentation of accessory breast cancer due to the rarity of the condition and this ultimately results in delayed diagnosis and advanced disease at presentation. It is therefore prudent that physicians have a high index of suspicion when patients present with axillary masses.
副乳腺组织（ABT）在大约 2%-6%的女性中存在，并且会经历胸乳腺发生的大多数生理和病理变化。发生在 ABT 的原发性乳腺癌是一种罕见的情况，而在副乳腺中发生的第二原发性乳腺癌从未有过报道。我们报告了一例 60 岁女性的病例，该患者在就诊前 5 年因左侧乳腺癌接受了乳房切除术，现出现右侧腋窝肿块增大，活检发现为副乳腺中的第二原发性乳腺癌。由于这种情况非常罕见，许多医生对副乳腺癌的临床表现并不熟悉，这最终导致诊断延迟和就诊时疾病已处于晚期。因此，当患者出现腋窝肿块时，医生应高度怀疑这种疾病。
