Percutaneous nephroscopy combined with ultrasound-guided negative-pressure suction for the treatment of perinephric abscess: a case series.

Background: Drainage is indicated in many patients with a perinephric abscess (PA). Surgical drainage is associated with trauma and slow recovery, while percutaneous drainage can be ineffective in some patients. We report on 11 patients with PA treated by percutaneous nephroscopy combined with ultrasound-guided negative-pressure suction under local anesthesia.

Methods: This case series included 11 PA patients operated on from January 2013 to June 2020. All patients received percutaneous nephroscopy combined with ultrasound-guided negative-pressure suction. Data, including operation time, volume of intraoperative blood loss, volume of intraoperative pus suction, time of postoperative drainage tube indwelling, time to restore normal body temperature, length of postoperative hospital stay, and intraoperative and postoperative complications, were collected.

Results: The age of the patients was 59 (53-69) years. Eight, six, two, and two patients had hypertension, type 2 diabetes, rheumatoid arthritis, and renal calculi, respectively. The operations were successful forall11 patients. Eight, two, and one patients required one, two, and three channels, respectively, to clear their abscess. The average operation time was 44 (30-65) min, and intraoperative blood loss was 16 (10-20) ml. The volume of intraoperative pus suction was 280 (200-400) ml, time of postoperative drainage tube indwelling was 8.2 (6-12) days, and time to restoring normal body temperature was 0.8 (0.5-2) days. The average postoperative hospital stay was 9.8 (7-14) days. No severe intraoperative or postoperative complications occurred. The postoperative follow-up time was typically 4.8 (3-8) months, and there were no recurrences.

Conclusion: Percutaneous nephroscopy combined with ultrasound-guided negative-pressure suction might be a feasible method for treating PA.