Kumar Lalit, Jain Siddharth, Kaushal Seema, Seth Amlesh, Goel Ritesh, Kumar Manoj, Kumar Sanjay
Department of Urology, All India Institute of Medical Sciences, New Delhi, India.
Department of Pathology, All India Institute of Medical Sciences, New Delhi, India.
J Endourol Case Rep. 2019 Dec 2;5(4):157-160. doi: 10.1089/cren.2019.0056. eCollection 2019.
Adult renal tumors vary from renal cell carcinoma (RCC) to upper tract urothelial cancer (UTUC). Tumor characteristics such as renal vein and inferior vena cava tumor thrombus are usually seen with RCC, but tumor thrombus into pelvicaliceal system (PCS) is a rare entity in RCC. At present only 11 cases have been reported in the literature. We report an unusual case of papillary type 1 RCC in a young Muslim man mimicking as UTUC radiologically and found to have free tumor thrombus in PCS. At follow-up of 6 months after right nephroureterectomy with bladder cuff excision, he is doing well clinically and radiologically without any recurrence. RCC with tumor thrombus into PCS is an uncommon entity. It can give similar appearance as an urothelial cancer of the pelvis on radiologic imaging. Pelvic tumor thrombus is now considered as a factor of poor prognostic importance and rarely encountered with pure papillary type of RCC.
成人肾肿瘤范围从肾细胞癌（RCC）到上尿路尿路上皮癌（UTUC）。诸如肾静脉和下腔静脉肿瘤血栓等肿瘤特征通常见于肾细胞癌，但肿瘤血栓进入肾盂肾盏系统（PCS）在肾细胞癌中是一种罕见情况。目前文献中仅报道了11例。我们报告了一例不寻常的病例，一名年轻穆斯林男性患1型乳头状肾细胞癌，影像学上酷似上尿路尿路上皮癌，且发现肾盂肾盏系统中有游离肿瘤血栓。在进行右肾输尿管切除术并切除膀胱袖口后的6个月随访中，他在临床和影像学方面情况良好，无任何复发。肾细胞癌伴有肿瘤血栓进入肾盂肾盏系统是一种不常见的情况。它在放射影像学上可呈现出与盆腔尿路上皮癌相似的表现。盆腔肿瘤血栓现在被认为是一个具有重要预后意义的因素，在纯乳头状肾细胞癌中很少见。
