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CT-Based Radiomic Score: A Risk Stratifier in Far-Advanced Gastric Cancer Patients.

Lan Wang¹, Lan Zhu¹, Jun Yan²

¹Department of Radiology, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China.

Academic Radiology

|January 7, 2023

Summary

This summary is machine-generated.

A radiomic score (RS) effectively predicts survival in far-advanced gastric cancer (FGC). This tool can guide personalized chemotherapy, identifying patients who benefit from specific treatments like neoadjuvant intraperitoneal and systemic (NIPS) therapy.

Keywords:

Computed tomography Gastric cancer Individualized treatment Radiomics Survival

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Area of Science:

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Radiology
Medical Imaging

Background:

Far-advanced gastric cancer (FGC) presents significant survival challenges.
Personalized treatment strategies are crucial for improving patient outcomes.

Purpose of the Study:

To investigate the value of a computed tomography-based radiomic score (RS) in stratifying survival for FGC patients.
To assess the RS's utility in guiding personalized chemotherapy decisions.

Main Methods:

A retrospective multicenter study included 283 FGC patients.
A radiomic score (RS) was developed using features from primary tumors and metastases.
The RS was validated in training, internal, and external cohorts for predicting progression-free survival (PFS) and overall survival (OS).

Main Results:

The RS demonstrated strong prognostic ability for PFS across all cohorts (C-index > 0.75, p < 0.05).
The RS effectively stratified PFS and OS in the overall population and metastatic subgroups.
Low RS scores correlated with increased likelihood of surgery after perioperative chemotherapy.
High-scoring patients with peritoneal metastasis showed benefit from neoadjuvant intraperitoneal and systemic (NIPS) therapy.

Conclusions:

The RS serves as an effective risk stratifier for FGC patient outcomes.
The RS can aid in selecting FGC patients who are likely to benefit from NIPS therapy.