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01.12.2008 | Hepatic and Pancreatic Tumors | Ausgabe 12/2008

Annals of Surgical Oncology 12/2008

Preoperative CA 19-9 and the Yield of Staging Laparoscopy in Patients with Radiographically Resectable Pancreatic Adenocarcinoma

Zeitschrift:
Annals of Surgical Oncology > Ausgabe 12/2008
Autoren:
MD Shishir K. Maithel, MD Stephen Maloney, MD Corrine Winston, PhD Mithat Gönen, MD Michael I. D’Angelica, MD Ronald P. DeMatteo, MD William R. Jarnagin, MD Murray F. Brennan, MD Peter J. Allen

Abstract

Background

Staging laparoscopy for patients with radiographically resectable pancreatic adenocarcinoma has been reported to yield an 8–15% finding of unresectable disease. Factors associated with the likelihood of subradiographic unresectable disease have not been clearly defined.

Methods

A prospectively maintained pancreatic database was reviewed and patients were identified who underwent staging laparoscopy for radiographically resectable pancreatic adenocarcinoma between January 2000 and December 2006. Preoperative carbohydrate antigen 19-9 (CA 19-9) values were assessed for their association with the presence of subradiographic unresectable disease.

Results

Four hundred ninety-one patients underwent staging laparoscopy. Resection was performed in 80% (n = 395). Of the 96 patients with unresectable disease, 75 (78%) had metastases either in the liver (n = 60) or peritoneum (n = 15). Preoperative CA 19-9 values were available for 262 of the 491 patients. Fifty-one of these patients had unresectable disease, of which 78% were due to distant disease. The median preoperative CA 19-9 value for patients who underwent resection was 131 U/ml versus 379 U/ml for those patients with unresectable disease (P = 0.003). A receiver operating characteristics (ROC) curve was developed for preoperative CA 19-9 value and tumor resectability. The statistically optimal cutoff value was determined to be 130 U/ml. Unresectable disease was identified in 38 of the 144 patients (26.4%) with a preoperative CA 19-9 ≥ 130 U/ml, and in 13 of the 118 patients (11%) with a CA 19-9 < 130 U/ml (P = 0.003). CA 19-9 values greater than 130 U/ml remained a predictor of tumor unresectability on multivariate regression analysis [hazard ratio (HR) 2.70, 95% confidence interval (CI) 1.34–5.44; P = 0.005].

Conclusion

In this study, preoperative CA 19-9 values were strongly associated with the identification of subradiographic unresectable disease. Preoperative CA 19-9 values may allow surgeons to better select patients for staging laparoscopy.

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