EC Clinical and Medical Case Reports

Calyceal diverticulum is a rare congenital anomaly of the renal collecting system, characterized by an outpouching of the calyceal wall, which communicates with the collecting system through a narrow neck. While often asymptomatic, secondary infection of the diverticulum can lead to significant clinical complications, including fever, flank pain, and recurrent urinary tract infections. Imaging modalities such as ultrasonography, computed tomography (CT), and magnetic resonance urography (MRU) play a crucial role in diagnosis, revealing a cystic lesion filled with urine, pus, or debris. The management of an infected calyceal diverticulum depends on the severity of symptoms, ranging from conservative antibiotic therapy to interventional procedures, such as percutaneous drainage, endoscopic marsupialization, or even nephrectomy in severe cases. This review discusses the pathophysiology, clinical presentation, imaging findings of infected calyceal diverticulum, emphasizing the importance of early diagnosis and appropriate intervention to prevent complications.

 Keywords: Calyceal Diverticulum; Renal Anomaly; Urinary Tract Infection; Percutaneous Drainage; Nephrectomy

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