Article Figures & Data
Figures
- FIGURE 1.
Axial (left), coronal (middle), and sagittal (right) 18F-FDG PET images of patient with physiologic 18F-FDG uptake in remnant stomach. (A–C) Before water ingestion, increased 18F-FDG uptake is seen in remnant stomach. (D–F) After water ingestion, uptake disappears.
- FIGURE 2.
Axial (left), coronal (middle), and sagittal (right) 18F-FDG PET images of patient with recurrent tumor in remnant stomach. (A–C) Before water ingestion, round area of increased 18F-FDG uptake is seen in remnant stomach. (D–F) After water ingestion, uptake persists.
- FIGURE 3.
Axial whole-body PET images of patient with recurrent signet ring adenocarcinoma in remnant stomach. (A) On these consecutive images obtained before water ingestion, peculiar area of increased 18F-FDG uptake is seen in remnant stomach (interpreted as true positive). (B) On these consecutive images obtained after water ingestion, decrease in 18F-FDG uptake produces false-negative result. In this case, initial 18F-FDG uptake might have been physiologic rather than due to recurrent tumor, considering tumor histology and result on spot images.
Tables
Characteristic No. of patients Histology Adenocarcinoma, well differentiated 2 Adenocarcinoma, moderately differentiated 6 Adenocarcinoma, poorly differentiated 18 Adenocarcinoma, mucinous 1 Signet ring cell carcinoma 3 Stage I 7 II 4 III 15 IV 4 - TABLE 2
Diagnostic Performance of Visual and SUV Analysis in Patients With or Without Recurrence in Remnant Stomach
Type of analysis True-positive False-negative True-negative False-positive Visual Whole body 16 1 9 4 Spot 15 2 12 1 SUV First criterion 17 0 2 11 Adding second criterion 13 4 13 0
