Abstract
Subcapsular renal hematoma is a complication of extracorporeal shock wave lithotripsy or percutaneous nephrolithotripsy. Although it can occur after transurethral ureterolithotripsy (TUL), there is no consensus on the risk factors, outcomes, and its management. This study aimed to elucidate the clinical courses of patients with subcapsular hematoma after TUL. We retrospectively investigated 1,235 patients who underwent TUL from October 2011 to December 2020 at our hospital and identified cases with subcapsular hematoma diagnosed after surgery. Subcapsular hematoma was diagnosed in 5 of the 1,235 (0.40%) patients, whose median age was 63 (49-69) years. The median operation time, hematoma diameter, and hemoglobin decrease were 66 (35-115) min, 8.2 (5.4-10.5) cm, and 1.6 (0.7-2.6) g/dl, respectively. All patients were conservatively managed without invasive interventions (eg, embolization), although one patient required blood transfusion. In conclusion, this study presented five cases with renal subcapsular hematoma after TUL that could be conservatively managed. It is important not to miss the timing of therapeutic intervention while observing the progress after diagnosis.
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