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Updated: Aug 9, 2026
Robot-Assisted Kidney Transplantation
Published on: July 19, 2021
Retroperitoneoscopic radical nephrectomy in obese patients: outcomes and considerations
1Department of Urology, Onomichi General Hospital, Onomichi, and Graduate School of Medical Sciences, Hiroshima University, Japan. inosyogo@ybb.ne.jp
Objective:
To determine whether obesity is associated with surgical outcome in Japanese patients undergoing retroperitoneoscopic radical nephrectomy (RRN).
Patients And Methods:
Between November 1999 and March 2005, we performed 98 RRN procedures for patients with renal cell carcinoma. Patients with a body mass index (BMI) of 25.0 or more were defined as obese (group A, n=33) and those with a BMI of <25.0 were defined as non-obese (group B, n=65), in accordance with the criteria of the Japan Society for the Study of Obesity. Patient background, degree of surgical invasiveness, and period of convalescence were compared between groups A and B.
Results:
No statistically significant differences were observed between the groups in terms of age, gender, tumor laterality, tumor size, and time until resumption of oral intake and ambulation. However group A had a significantly longer insufflation time (172.1 vs. 137.4 min), greater blood loss (195.3 vs. 48.4 ml) and higher renal specimen weight (440.0 vs. 306.0 g) than group B.
Conclusion:
Obesity is not a factor that affects patient eligibility for RRN, but is a risk factor for longer insufflation time and greater blood loss.
