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Personalized Surveillance Intervals for Intraductal Papillary Mucinous Neoplasm (IPMN): Multicenter Study Using

Claudio Ricci^1,2, Stefano Crippa³, Johnathan Hee^4,5

¹Department of Internal Medicine and Surgery (DIMEC); Alma Mater Studiorum, University of Bologna.

Annals of Surgery

|March 21, 2025

Summary

This summary is machine-generated.

A new calculator aids personalized surveillance for branch duct intraductal papillary mucinous neoplasms (BD-IPMNs). Patient age and cyst size predict IPMN evolution, guiding tailored follow-up intervals for better management.

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Area of Science:

Gastroenterology and Hepatology
Oncology
Medical Informatics

Background:

Surveillance intervals for low-risk branch duct intraductal papillary mucinous neoplasms (BD-IPMNs) lack established guidelines.
Accurate risk stratification is crucial for effective patient management and resource allocation.

Purpose of the Study:

To develop a predictive calculator for personalized surveillance of BD-IPMNs.
To identify key factors influencing the evolution of BD-IPMNs.

Main Methods:

An international cohort of BD-IPMNs without worrisome features or high-risk stigmata was analyzed.
A parametric survival model was developed and validated using derivation and validation cohorts.
The PANORAMA model was specifically developed and tested for its predictive accuracy.

Main Results:

Patient age and cyst size were identified as significant predictors of IPMN evolution.
The conservative PANORAMA model demonstrated superior classification accuracy in the validation cohort.
The lognormal distribution best fitted the data, with a pooled c-index of 0.689.

Conclusions:

IPMN evolution is significantly influenced by patient age and cyst size.
Current semestral/annual follow-up after six months may be overly frequent for low-risk BD-IPMNs.
The PANORAMA calculator offers a personalized approach to BD-IPMN surveillance.