Nerve-sparing surgery with lateral node dissection for advanced lower rectal cancer.

133 patients who underwent nerve-sparing surgery with lateral dissection for lower rectal cancer were analysed for survival and functional results, operative burdens, and modes of recurrence. In 84% of patients an acceptable urinary function was preserved. Operative time averaged 334 min, and blood loss averaged 935 ml. The 5-year survival rate was 67% in all patients, and 88% for Dukes' A, 74% for Dukes' B and 59% for Dukes' C. According to the number of positive nodes, the 5-year survival rate comprised 83% of patients with up to three nodes, and 34% of those with more than four nodes. Local recurrent rates were 2.7% in patients with Dukes' B and 13% with Dukes' C. At present, pelvic nerve-sparing procedures with lateral dissection is the most promising surgery, guaranteeing both adequate lymphadenectomy and preservation of urinary function.