Work

Calyceal diverticulum masquerading as gross hydronephrosis: A diagnostic challenge

Year: 2026

Type: article

Abstract: Calyceal diverticula are infrequent congenital anomalies of the renal collecting system that often serve as "radiological traps" due to their resemblance to hydronephrosis. This report details the case of a 38-year-old male whose. Initial ultrasonography demonstrated a large cystic lesion within the left renal sinus, raising suspicion for severe hydronephrosis. CT urography was subsequently performed to evaluate for obstructive uropathy. Delayed excretory phase imaging demonstrated contrast opacification within the lesion through a narrow communicating infundibulum, confirming the diagnosis of calyceal diverticulum. This case emphasizes that in the absence of an identifiable obstructive cause, delayed-phase imaging is mandatory to differentiate diverticula from obstructive uropathy, thereby preventing unnecessary surgical intervention.

Source: Radiology Case Reports

DOI: 10.1016/j.radcr.2026.05.077

Authors: Komal Kumari Navik, Gaurav Raj, Roopal Malik

Institution: Dr. Ram Manohar Lohia Institute of Medical Sciences

Language: English

Topic: Pediatric Urology and Nephrology Studies

Subfield: Pediatrics, Perinatology and Child Health

Field: Medicine

Domain: Health Sciences

SDG: Good health and well-being

Open Access status: gold

Estimated APC paid: $600