Novel score for prediction of malignant bile duct obstruction based on biochemical and clinical markers.

Abstract:

BACKGROUND:Early differentiation of malignant from benign bile duct obstruction is of utmost importance. AIM:To identify biochemical and clinical predictors for malignancy in patients with bile duct obstruction, and establish a predictive model by combining pre-treatment patient characteristics. A web-based application was developed for easy assessment of malignant bile duct probability (www.pmal-score.org). METHODS:One thousand hundred and thirty-five patients [median age 66 (52-75) years, 53% male] with bile duct obstruction of various aetiologies were retrospectively evaluated at our tertiary referral centre. Multivariate logistic regression analysis identified factors as independently significant for malignant bile duct obstruction. A predictive risk score was established using ROC analysis and applied to an external validation cohort of 101 patients. RESULTS:Three hundred and ninety-four patients had malignant bile duct obstruction proven by surgery, while in 741 patients benign obstruction was observed. Multivariate analysis identified various clinical factors to be predictive for malignancy. On the basis of eight predictors, a risk score for malignancy was developed [X = 0.025 * [age] + 1.239 * [1 if weight loss, otherwise 0] - 0.235 * [1 if pain, otherwise 0] + 0.649 * [1 if diabetes, otherwise 0] + 0.896 * [1 if jaundice, otherwise 0] + 0.109 * [bilirubin] + 0.0007 * [γ-GT] + 0.0003 * [AP] - 4.374]: A significant correlation between the predicted malignancy and the actual malignancy was found by ROC (AUC: 0.862; 95% CI 0.838-0.886, P < 0.0001). CONCLUSIONS:This predictive risk score estimates the risk of malignancy in patients with bile duct obstruction, and it seems to be very accurate. A better prediction enables both earlier diagnosis of malignant obstructive disease and improved management of patients with bile duct obstruction, which may result in reduced morbidity and mortality.

journal_name

Aliment Pharmacol Ther

authors

Meister T,Uphoff MA,Heinecke A,Domagk D,Kunsch S,Lindhorst A,Ellenrieder V,Heinzow HS

doi

10.1111/apt.13152

subject

Has Abstract

pub_date

2015-05-01 00:00:00

pages

877-87

issue

9

eissn

0269-2813

issn

1365-2036

journal_volume

41

pub_type

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