Nguyen Quan D, Ko Hyunjoo, Robinson Angelica S, Lee Anne E, He Jing
Radiology, University of Texas Medical Branch, Galveston, USA.
Pathology, University of Texas Medical Branch, Galveston, USA.
Cureus. 2020 Sep 13;12(9):e10428. doi: 10.7759/cureus.10428.
Renal cell carcinoma (RCC) defines a varied class of primary renal neoplasms which arise from the renal cortex. Because RCC often progresses silently to a very advanced metastatic stage, the majority of RCC cases are diagnosed either incidentally on abdominal imaging or upon presentation of invasive disease at metastatic sites. This case profiles a 57-year-old woman with distant history of resected RCC who presented with a posterior breast mass that was diagnosed as metastatic recurrence of RCC through mammogram, ultrasound, and core biopsy. Although the breast is an unusual site for metastasis, clinicians should consider metastatic RCC as a possible etiology when evaluating women with history of RCC and a newly discovered breast mass.
肾细胞癌（RCC）是一类起源于肾皮质的原发性肾脏肿瘤。由于肾细胞癌通常在无声无息中发展到非常晚期的转移阶段，大多数肾细胞癌病例是在腹部影像学检查时偶然发现的，或者是在转移部位出现侵袭性疾病时才被诊断出来。本病例介绍了一名57岁女性，她有肾细胞癌切除史，此次因乳腺后部肿块就诊，通过乳房X线摄影、超声和芯针活检诊断为肾细胞癌转移复发。尽管乳腺是不常见的转移部位，但临床医生在评估有肾细胞癌病史且新发现乳腺肿块的女性时，应考虑转移性肾细胞癌作为可能的病因。
