Primary renal neuroendocrine tumor combined with horseshoe kidney: a case report and review of the literature.

ABSTRACT:

Background

Primary renal neuroendocrine tumors (PRNETs) are exceptionally rare neoplasms, with only limited cases documented in the literature. Their occurrence in association with horseshoe kidney represents an even rarer clinical scenario. This report presents a case of well-differentiated neuroendocrine tumor arising in a horseshoe kidney and discusses its clinical management and prognostic implications.

Case presentation

A 58-year-old female was admitted after an incidental discovery of a left renal mass during a routine health examination. Imaging studies, including enhanced CT and MRI, revealed a horseshoe kidney with a 5.5 × 4.7 cm cystic-solid mass in the mid-lower portion of the left kidney, classified as Bosniak IV. The patient underwent laparoscopic partial nephre

SUBMITTER: Ni J 

PROVIDER: S-EPMC12821233 | biostudies-literature | 2025 Dec

REPOSITORIES: biostudies-literature