CT's capability in detecting advanced gastric cancer

Area of Science:

• Medical Imaging
• Oncology
• Gastroenterology

Background:

• Advanced gastric cancer diagnosis relies on imaging.
• Computed tomography (CT) is a key tool for staging gastric malignancies.
• Accurate staging is crucial for treatment planning and surgical resectability assessment.

Purpose of the Study:

• To evaluate the diagnostic capability of CT scans in detecting advanced gastric cancer.
• To correlate CT findings with upper GI series results.
• To assess CT's accuracy in identifying tumor invasion of adjacent structures and predicting surgical resectability.

Main Methods:

• Retrospective review of CT scans and upper GI series from 23 patients with advanced gastric cancer.
• Analysis of CT findings, including mass presence, wall thickening, and adjacent invasion.
• Correlation of imaging findings with clinical outcomes and surgical resectability.

Main Results:

• CT detected abnormalities (mass or wall thickening) in 78% of advanced gastric cancer cases.
• A distinct "mass" was visualized in 52% of cases.
• The antrum was the most challenging location for CT diagnosis of gastric cancer.
• CT failed to identify adjacent invasion in 4 out of 5 unresectable cases, indicating unreliability in predicting resectability.

Conclusions:

• CT is a valuable tool for detecting advanced gastric cancer, with abnormalities seen in most patients.
• CT's accuracy in evaluating adjacent invasion and predicting surgical resectability is limited.
• Further improvements in CT interpretation or complementary imaging may be needed for comprehensive staging of gastric cancer.