In an attempt to improve the guidelines for concurrent management of concom
itant abdominal aortic aneurysm (AAA) and symptomatic malignancy, a retrosp
ective study was undertaken. A total of 186 AAA repairs were performed elec
tively, and 25 patients (13.4%) had concurrent symptomatic malignancy from
April 1986 to March 1997, Fourteen patients underwent a one-stage operation
, including five abdominoperineal rectal resections, four subtotal gastrect
omies, three total gastrectomies, and two right hemicolectomies. Eleven oth
ers underwent a two-stage operation, including four with total gastrectomy
and left hemicolectomy followed by AAA repair, as well as two with right he
micolectomy and one with left hemicolectomy prior to AAA repair. There were
no operative deaths or severe postoperative complications. Of the 25 patie
nts, 22 (88.0%) are still alive during follow-up ranging from 8 months to 1
1 gears. Our surgical approach to both lesions is as follows: (1) Using the
transperitoneal approach alone, subtotal gastrectomy and abdominoperineal
rectal resection can be safely done simultaneously. (2) Although total gast
rectomy can also be performed concurrently, the approach used for each lesi
on is separate. (3) Colorectal resection is generally done separately. Howe
ver, a one-stage operation can be performed using the thromboexclusion proc
edure for AAA repair in patients with right-sided colonic cancer or a tempo
rary transverse colostomy for left-sided colorectal cancer.