Primary encapsulated papillary carcinoma of axillary accessory breast complicated with breast cancer: a case report

Abstract

Multiple primary carcinomas of primary encapsulated papillary carcinoma of axillary accessory breast complicated with breast cancer are extremely rare in clinical practice. Due to its low incidence and lacking of specific imaging and clinical manifestations，it is challenging to distinguish axillary accessory breast cancer from breast cancer lymph node metastasis and to the risk of misdiagnosis is high. In this article，a 61-year-old female patient was reported. She was admitted to our hospital due to a lump in the right axil for more than half a year. Ultrasound examination prompted the possibility of benign lesions，and surgical resection was performed for further diagnosis and treatment. Pathological biopsy confirmed the diagnosis of encapsulated papillary carcinoma of the right axillary accessory breast complicated with intraductal carcinoma. One month later，the patient found right breast nodule，and auxiliary examination indicated the risk of breast cancer. She was diagnosed with invasive breast cancer by pathological biopsy. Combined with the diagnosis and treatment experience of this case，literature review was also performed，aiming to improve the diagnosis and treatment of this disease.

Keywords

• encapsulated papillary carcinoma|accessory breast cancer|breast cancer|multiple primary carcinomas|ultrasonic diagnosis