![]() It gives an accurate stone burden estimation using stone size or volume and other morphometric data can be retrieved for staghorn calculi with complex 3D morphology. This method gives the most information about the calculus and pre-contrast acquisition can be sufficient in many cases. It is a useful tool for surgical planning, particularly since percutaneous nephrolithotomy (NLPC) is now considered the preferred treatment when stone burden is high and/or staghorn morphology is present. Urolithiasis is a frequent urologic disease with high social impact and MDCT is the gold-standard method for diagnosis and follow-up. No further lesions were identified in the excretory system, with normal contrast filling of both ureters and bladder during the excretory phase. A solid mass with heterogeneous contrast-enhancement was identified in the superior calyces and renal pelvis, with focal invasion of the renal cortex and involving the staghorn calculi (Fig. The presence of a right lower pole calyceal diverticulum was noted. It confirmed bilateral urolithiasis with a staghorn calculus in the right kidney, occupying the renal pelvis and various calyces and showing fragmentation, and density values higher than 1000 Hounsfield units (Fig. 2).ĬT was performed for surgical planning, and a complete uro-CT protocol was acquired for calyceal anatomy definition. A renal ultrasound was performed and detected additional anomalous calyceal anatomy of the right kidney, with a calyceal diverticulum (Fig. An X-ray abdomen and pelvis (KUB) was initially obtained, and showed bilateral renal stones, with fragmented staghorn morphology on the right kidney (Fig. ![]()
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