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[LOCALIZED AMYLOIDOSIS OF THE RENAL SINUS: A CASE REPORT]. Nihon Hinyokika Gakkai Zasshi 2019; 110:191-195. [PMID: 32684580 DOI: 10.5980/jpnjurol.110.191] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
An 80-year-old man was accidentally diagnosed with a left renal pelvic tumor by computed tomography (CT), and visited our hospital. A tumorous lesion with an inhomogeneous contrast effect occupying the left renal pelvis was confirmed by the contrast-enhanced CT scan, and enlargement of multiple lymph nodes around the aorta and inferior vena cava was recognized. Urine cytology of the left renal pelvis was pseudo-positive. In the preoperative diagnosis of left renal pelvic carcinoma cT3N2M0, left nephroureterectomy and lymph node dissection were performed. Pathological findings revealed an amyloid tumor confined to the renal sinus and diagnosed as localized amyloidosis.
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Lu W, Wang Y, Zhang M, Li Y, Cao Y, Xiao Y, Cai Z, Wu S, Zhou F. Primary localized amyloidoma of the renal pelvis: A case report and literature review. Oncol Lett 2016; 11:1095-1100. [PMID: 26893698 DOI: 10.3892/ol.2015.4038] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2015] [Accepted: 11/19/2015] [Indexed: 12/28/2022] Open
Abstract
Primary localized amyloidomas of the renal pelvis are challenging to diagnose, due to non-specific imaging results and the unusual location. The present study reports a rare case of primary localized amyloidoma of the renal pelvis and aims to illustrate the challenges in pre-operatively discriminating between this disease and transitional cell carcinomas. The present study identified that the mass was situated in the left renal pelvis using ultrasonography. A nephroureterectomy was performed following careful preparation. Finally, histopathological studies revealed that the tumor consisted of massive diffuse deposits of amyloid and microscopic amorphous eosinophilic material, which stained positively for Congo red, demonstrating potassium permanganate digestion. Consequently, a diagnosis of amyloid light chain-type amyloidoma was determined. Systematic examinations were performed following the unexpected diagnosis, which eliminated the possibility of amyloid associated-type amyloidoma. In total, 4 months post-surgery, the patient remained tumor-free.
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Affiliation(s)
- Wei Lu
- Department of Graduate School, Anhui Medical University, Hefei, Anhui 230022, P.R. China; Department of Urology, State Key Laboratory of Oncology in Southern China, Sun Yat-sen University Cancer Center, Guangzhou, Guangdong 510060, P.R. China; Department of Urology, Shenzhen Second People's Hospital, The First Affiliated Hospital of Shenzhen University, Shenzhen, Guangdong 518035, P.R. China
| | - Yanjun Wang
- Department of Urology, State Key Laboratory of Oncology in Southern China, Sun Yat-sen University Cancer Center, Guangzhou, Guangdong 510060, P.R. China
| | - Meng Zhang
- Department of Graduate School, Anhui Medical University, Hefei, Anhui 230022, P.R. China; Department of Urology, State Key Laboratory of Oncology in Southern China, Sun Yat-sen University Cancer Center, Guangzhou, Guangdong 510060, P.R. China; Department of Urology, Shenzhen Second People's Hospital, The First Affiliated Hospital of Shenzhen University, Shenzhen, Guangdong 518035, P.R. China
| | - Yonghong Li
- Department of Urology, State Key Laboratory of Oncology in Southern China, Sun Yat-sen University Cancer Center, Guangzhou, Guangdong 510060, P.R. China
| | - Yun Cao
- Department of Pathology, State Key Laboratory of Oncology in Southern China, Sun Yat-sen University Cancer Center, Guangzhou, Guangdong 510060, P.R. China
| | - Yongbo Xiao
- Department of Pathology, State Key Laboratory of Oncology in Southern China, Sun Yat-sen University Cancer Center, Guangzhou, Guangdong 510060, P.R. China
| | - Zhiming Cai
- Department of Graduate School, Anhui Medical University, Hefei, Anhui 230022, P.R. China; Department of Urology, Shenzhen Second People's Hospital, The First Affiliated Hospital of Shenzhen University, Shenzhen, Guangdong 518035, P.R. China
| | - Song Wu
- Department of Urology, State Key Laboratory of Oncology in Southern China, Sun Yat-sen University Cancer Center, Guangzhou, Guangdong 510060, P.R. China; Department of Urology, Shenzhen Second People's Hospital, The First Affiliated Hospital of Shenzhen University, Shenzhen, Guangdong 518035, P.R. China
| | - Fangjian Zhou
- Department of Urology, State Key Laboratory of Oncology in Southern China, Sun Yat-sen University Cancer Center, Guangzhou, Guangdong 510060, P.R. China
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