Wang X, Yu LJ, Lu PO, Tian MH, Li YC, Wang H. FDG PET/CT diagnosis of clinically occult gastric cancer.
Shijie Huaren Xiaohua Zazhi 2012;
20:3695-3700. [DOI:
10.11569/wcjd.v20.i36.3695]
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Abstract
AIM: To investigate the use of fluorodeoxyglucose (FDG) positron emission tomography ( PET)/CT imaging in diagnosis of clinically occult gastric cancer.
METHODS: The imaging data for 26 patients with clinically occult gastric cancer who underwent FDG PET/CT imaging were reviewed retrospectively. They were hospitalized for metastatic tumors and therefore underwent FDG PET/CT for detecting carcinoma of unknown primary origin. They were finally diagnosed with gastric cancer by endoscopy (n = 24) or laparoscopy (n = 2). Based on imaging manifestations, the patients were divided into three groups: easily diagnosed, suspected, and hardly diagnosed.
RESULTS: PET imaging showed 57.7% (15/26) of intensively positive cases, 23.1% (6/26) of positive cases, and 19.2% (5/26) of negative cases. CT imaging showed 76.9% (20/26) of intensively positive cases, 11.5% (3/26) of positive cases, and 11.5% (3/26) of negative cases. The percentages of easily diagnosed, suspected, and hardly diagnosed patients were 53.8% (14/26), 34.6% (9/26) and 11.5% (3/26), respectively.
CONCLUSION: FDG PET/CT imaging can help diagnose clinically occult gastric cancer in about 88.4% of patients.
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