Pancreatic cancer with paraaortic lymph node metastasis: a contraindication for radical surgery?

OBJECTIVES

The purpose of this study was to determine the operative indications for pancreatic cancer with paraaortic lymph node metastases (No. 16 [+]).

METHODS

Between July 1981 and March 2007, 335 patients with pancreatic cancer including 45 No. 16 (+) patients underwent extended radical surgery at the Department of Surgery II, Nagoya University. The overall survival rates and clinicopathological parameters were analyzed using univariate and multivariate analyses.

RESULTS

Although there was no significant difference in survival between the No. 16 (+) patients and the unresectable cases, there were some long-term survivors among the No. 16 (+) patients. Multivariate analysis of the No. 16 (+) patients identified age (59 years or younger), tumor size (>4 cm), and pathologically confirmed portal invasion (pPV[+]) as independent prognostic factors. The survival of No. 16 (+) patients without these factors was significantly better than the unresectable cases. The survival of patients with only 1 metastatic paraaortic lymph node also was significantly better than the unresectable cases, and tended to be better than those with more than 2 metastatic nodes.

CONCLUSIONS

No. 16 (+) pancreatic cancer patients with age 60 years or older, tumor size 4 cm or less, and pPV(-) may benefit from resection.