Juxtaglomerular cell tumor diagnosed preoperatively by renal tumor biopsy

Introduction Diagnosis of small renal tumor from imaging analysis is limited. We report a case of juxtaglomerular cell tumor diagnosed preoperatively by renal tumor biopsy. Case presentation A 17‐year‐old male was urgently hospitalized for acute‐onset congestive heart failure. Radiographic findings revealed a 2‐cm mass lesion, and on renal biopsy, a juxtaglomerular cell tumor was suspected. The juxtaglomerular cell tumor was resected by laparoscopic partial nephrectomy, on suspicion of causing the heart failure. The patient’s clinical symptoms improved drastically postoperatively. Conclusion Biopsy may be a promising option for preoperative diagnosis of juxtaglomerular cell tumors.

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