Single-center comparison of complications in laparoscopic and percutaneous radiofrequency ablation with ultrasound guidance for renal tumors.
OBJECTIVE
To report on postoperative complications associated with laparoscopic radiofrequency ablation (LRFA) and percutaneous radiofrequency ablation (PRFA) in a single-center experience.


METHODS
We conducted a retrospective review of medical records for patients undergoing LRFA or PRFA between February 2006 and March 2010 at our center. Demographics, radiographic variables, and complication rates were compared between the 2 groups. Risk factors for postoperative complications after operation were analyzed with multivariate logistic regression.


RESULTS
Of a total 191 patients included in this study, 132 underwent LRFA and 59 underwent PRFA. There were no significant differences between the 2 groups with respect to age, gender, biopsy data, American Society of Anesthesiologists classification, body mass index, single kidney, tumor size, tumor number, glomerular filtration rate, follow-up, or RENAL nephrometry score. We observed complications in 16 LRFA procedures (12.1%) and 10 PRFA procedures (16.9%) (P = .369). There was no difference in the distribution of the complications between LRFA and PRFA groups. The complication (grades 1 and 2) rate in the LRFA group (7.6%) was not significantly different from that in the PRFA group (10.2%) (P = .550). The complication (grade 3a) rate in the LRFA group (4.5%) was not significantly different from that in the PRFA group (6.8%) (P = .522). A multivariate analysis disclosed that extra ablation time was the only predictor of postoperative complications.


CONCLUSIONS
Significantly more anterior tumors were approached laparoscopically, and significantly more posterior tumors were approached percutaneously. Complication rate was not significantly different between LRFA and PRFA. Extra ablation time was a significant risk factor associated with postoperative complications.
Department of Urology, Affiliated Drum Tower Hospital of Nanjing University, Nanjing, China.
Huibo
H
Lian
Hongqian
H
Guo
Gutian
G
Zhang
Rong
R
Yang
Weidong
W
Gan
Xiaogong
X
Li
Changwei
C
Ji
Jun
J
Liu
D000368:Aged; D017115:Catheter Ablation / Q000009:adverse effects* / Q000379:methods*; D005260:Female; D006801:Humans; D007680:Kidney Neoplasms / Q000000981:diagnostic imaging* / Q000601:surgery*; D010535:Laparoscopy / Q000009:adverse effects* / Q000379:methods*; D008297:Male; D011183:Postoperative Complications / Q000453:epidemiology / Q000209:etiology; D012189:Retrospective Studies; D018084:Ultrasonography, Interventional