[Simple renal cyst open into the urinary tract]

Area of Science:

• Pediatric Urology
• Renal Pathology

Background:

• Renal cysts can present diagnostic challenges in pediatric patients.
• Differentiating simple cysts from other renal pathologies is crucial for appropriate management.

Observation:

• A three-year-old girl presented with a cystic lesion in her left kidney.
• The cyst was observed to communicate directly with a renal calyx.

Findings:

• Histological, radiological, and clinical data supported the diagnosis of a simple renal cyst communicating with the excretory ducts.
• The cyst epithelium was characterized as simple cuboid.
• Intravenous urography demonstrated retrograde filling of the cyst cavity.

Implications:

• This case highlights the importance of considering simple renal cysts communicating with ducts in pediatric differential diagnoses.
• A traumatic etiology is suggested for the cyst's communication with the excretory duct.
• Understanding the imaging and histological features aids in accurate diagnosis and management of pediatric renal cystic lesions.