Abstract
The aim of the present study was to evaluate the clinical value of magnetic resonance imaging (MRI) in the preoperative T staging of gastric cancer and in the postoperative pathological diagnosis. In total, 30 patients with gastric cancer were investigated, including 19 males and 11 females (age, 50–69 years; mean age, 60 years). The preoperative depth of invasion (T stage) was evaluated according to the characteristics of the imaging performance. The evaluation results for the MRI T staging were as follows: T1 stage accuracy, 90% with a specificity of 96% and sensitivity of 60% (κ value=0.61; P<0.05); T2 stage accuracy, 86.7% with a specificity of 87.5% and sensitivity of 83.3% (κ value=0.71; P<0.05); T3 stage accuracy, 90% with a specificity and sensitivity of 90% (κ value=0.78; P<0.05); and T4 stage accuracy, 96.7% with a specificity of 100% and sensitivity of 87.5% (κ value=0.91; P<0.05). The results demonstrated that, with reference to pathological diagnosis, the MRI method exhibited high accuracy, specificity and sensitivity in determining the preoperative T stage in gastric cancer patients.
Highlights
Gastric cancer is one of the most common types of gastrointestinal cancer in China, with notably high incidence (3.3%) and mortality (75%) rates, and is associated with a poor prognosis
Diagnostic accuracy of T4 stage was 96.7%, with a specificity of 100% and sensitivity of 87.5% (κ value=0.91; P
Gastric cancer occurs in the gastric antrum, predominantly in the lesser curvature of the stomach, which accounts for ~75% of gastric cancers
Summary
Gastric cancer is one of the most common types of gastrointestinal cancer in China, with notably high incidence (3.3%) and mortality (75%) rates, and is associated with a poor prognosis. The diagnosis of gastric cancer has predominantly been based on upper gastroenterography and gastroscopy, which directly or indirectly observes the morphology, range and pathological changes occurring on the gastric mucosal surface. These were the necessary methods to confirm the identification, location and characteristic diagnosis of gastric cancer. Diagnosis has been improved by the application of the endoscopic ultrasound (EUS) and multislice computed tomography (MSCT), which clearly exhibit the location, size and shape of stomach tumors, and determine the extent of tumor invasion, lymph node metastasis and distant organ metastasis These methods are, considered to aid with the preoperative staging of the tumor. In the stratified diagnosis of gastric cancer, EUS and MSCT have certain limitations, in addition, the accuracy of MSCT and EUS, with regard to detecting the depth of gastric cancer invasion and the staging, remains controversial
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