Kobayashi Yasuyuki, Arai Hiroki, Honda Masahito, Matsumoto Takashi, Yoshida Kyotaro
Departments of Urology, Kinki Central Hospital of Mutual Aid Association of Public Teachers, 3-1 Kurumazuka, Itami, Hyogo, 664-8533, Japan.
Surgery, Kinki Central Hospital of Mutual Aid Association of Public Teachers, 3-1 Kurumazuka, Itami, Hyogo, 664-8533, Japan.
BMC Urol. 2018 Mar 1;18(1):11. doi: 10.1186/s12894-018-0324-9.
Metastatic renal cancers are relatively common. Most are metastases to the renal parenchyma via a hematogenous route and are derived from lung, breast, and gastrointestinal cancer, malignant melanoma, and hematologic malignant cancer. However, little is known about renal capsule metastasis from other cancers.
We report a 71-year-old woman with breast cancer who was treated with endocrine therapy. She presented with gross hematuria and was diagnosed as having right renal pelvic cancer and renal cell cancer. She underwent right laparoscopic radical nephroureterectomy. Pathological findings revealed right pelvic cancer and renal capsule metastasis.
Renal capsule metastasis derived from renal pelvic cancer is very rare. When diagnosing renal capsule cancer, we believe that renal capsule metastasis should also be taken into consideration. Clinical and radiological differential diagnosis of renal capsule metastasis from renal cell cancer and primary renal capsule cancer is difficult. Assessment of the histopathological findings of the surgical specimens seems to be the only realistic approach to achieving the correct diagnosis.
转移性肾癌相对常见。大多数是通过血行途径转移至肾实质，其原发肿瘤来源于肺癌、乳腺癌、胃肠道癌、恶性黑色素瘤和血液系统恶性肿瘤。然而，关于其他癌症转移至肾包膜的情况却知之甚少。
我们报告一名71岁接受内分泌治疗的乳腺癌女性患者。她出现肉眼血尿，被诊断为右肾盂癌和肾细胞癌。她接受了右腹腔镜根治性肾输尿管切除术。病理结果显示为右肾盂癌和肾包膜转移。
源自肾盂癌的肾包膜转移非常罕见。在诊断肾包膜癌时，我们认为也应考虑肾包膜转移。肾包膜转移与肾细胞癌及原发性肾包膜癌的临床和影像学鉴别诊断较为困难。评估手术标本的组织病理学结果似乎是获得正确诊断的唯一现实方法。
