The Role of 18F-FDG PET/CT in the Evaluation of Gastric Cancer Recurrence after Curative Gastrectomy
Yonsei Medical Journal
; : 81-88, 2011.
Article
in English
| WPRIM (Western Pacific)
| ID: wpr-146142
Responsible library:
WPRO
ABSTRACT
PURPOSE:
18F-fluorodeoxyglucose positron emission tomography/computed tomography (18F-FDG PET/CT) scans are frequently performed for the screening or staging of malignant tumors. This study aimed to assess the usefulness of 18F-FDG PET/CT in detection of gastric cancer recurrence after curative gastrectomy. MATERIALS ANDMETHODS:
Eighty nine patients who had undergone curative gastrectomy due to gastric cancer and had 18F-FDG PET/CT and contrast CT scans within 2 weeks for surveillance in asymptomatic patients (n = 11) or to clarify suspected recurrence (n = 78) were consecutively collected and retrospectively analyzed. They had clinical follow-up for at least 12 months after PET/CT and CT scans.RESULTS:
Fifteen of the 89 patients (16.9%) were diagnosed with recurrent gastric cancer in 21 organs. Forty one organs showed an increase in FDG uptake, and only 9 of these organs were diagnosed with recurrent gastric cancer by 18F-FDG PET/CT. The sensitivity, specificity, positive predictive value, negative predictive value, and diagnostic accuracy of the 18F-FDG PET/CT were 42.9%, 59.7%, 29.3%, 78.2%, and 57.3%, respectively. On the CT scan, 18 of 21 recurrent gastric cancers were detected, and 7 cases were in agreement with the 18F-FDG PET/CT. The sensitivity and specificity of the CT scan were 85.8% and 87.3%, respectively, which are superior to the 18F-FDG PET/CT. When we diagnosed a recurrence based on either 18F-FDG PET/CT or CT scans, the sensitivity increased to 95.2% and the specificity decreased to 45.6%, when compared with the contrast CT scan alone.CONCLUSION:
18F-FDG PET/CT is an insufficient diagnostic method in detection of recurrence after curative gastrectomy, and even less accurate than contrast CT scan alone.
Full text:
Available
Database:
WPRIM (Western Pacific)
Main subject:
Stomach Neoplasms
/
Tomography, X-Ray Computed
/
Fluorodeoxyglucose F18
/
Positron-Emission Tomography
/
Gastrectomy
/
Neoplasm Recurrence, Local
Type of study:
Prognostic study
Limits:
Adult
/
Aged
/
Aged, 80 and over
/
Female
/
Humans
/
Male
Language:
English
Journal:
Yonsei Medical Journal
Year:
2011
Document type:
Article