Infected Calyceal Diverticulum: A Case Report of Septic Shock

Calyceal diverticula are rare urological anomalies, often asymptomatic and incidentally discovered. They may predispose patients to infection, nephrolithiasis, or pain, but severe complications such as septic shock are exceedingly rare. We present the case of a 57-year-old male with a history of hypertension, admitted in septic shock of unknown origin. Initial imaging suggested a large, possibly infected renal cyst. Despite empirical antibiotic therapy, clinical and biological response was limited. Abdominal CT confirmed a 17 cm lesion in the left kidney. Percutaneous drainage under ultrasound guidance revealed purulent material, confirming the diagnosis of an infected calyceal diverticulum.