An 11-year-old girl presented with recurrent episodes of Urinary Tract Infections. She had no significant medical history, and her radiological reports showed that both her kidneys were normal in size, position, and echogenicity. However, minimal fullness in her renal pelvis was observed in the follow-up ultrasounds. Three years later, she complained of left flank pain and frontal headache. Ultrasound tests were conducted again (Cover image). What is your diagnosis for this patient?

*This patient case is from the Editorial team of Docplexus and is meant for educational purposes only. Source: Abualjadayel MH et al. A Rare Benign Tumor in a 14-Year-Old Girl. Case Reports in Nephrology Volume 2018, Article ID 1548283. The answer has been posted in the comments section. Click here.