Concurrent angiomyolipomas and renal cell neoplasms in patients without tuberous sclerosis: a retrospective study

International Journal of Surgical Pathology
Mariachiara MeiPaolo Gattuso

Abstract

Synchronous renal cell neoplasms (RCNs) and angiomyolipomas (AML) occurring in the same kidney are rare. The aim of this retrospective study is to investigate the incidence and clinicopathological features of concurrent AML and RCN in patients without tuberous sclerosis complex (TSC). Partial and radical nephrectomy specimens with a diagnosis of RCN and AML from 1995 to May 2013 were reviewed. Cases were assessed for histological subtype of AML and RCN, topographic relationship between the AML and the RCN, and clinical characteristics. A total of 565 RCNs and 19 AMLs were identified. Of 19 cases of AML, 9 (47%) were associated with renal tumors. Clear-cell renal cell carcinoma (RCC) was the most common malignancy associated with AML (56%). The mean age of patients with concomitant AML and RCN was higher than the mean age of patients with only AML (58.6 vs 55.5 years). The majority of patients with concomitant AML and RCN were female (78%). All concurrent sporadic AMLs were benign. We identified one case of bilateral clear-cell RCC with concomitant multiple bilateral AMLs in a patient with TSC.

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Citations

Mar 31, 2019·IJU Case Reports·Takahiro NarimatsuHiromitsu Mimata

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