Multi-site abdominal tuberculosis mimics malignancy on 18F-FDG PET/CT: Report of three cases

Table 1 Maximum standardized uptake values and retention index of maximal standardized uptake value

Lesion location	SUV1	SUV2	RI-SUVmax (%)
Patient 1
Behind pancreas	17.7	16.5	-6.78
In retroperitoneal space	14.4	12.1	-15.97
In spleen	6.7	9.2	37.31
Patient 3
In liver hilum	13.2	15.3	15.91
Near the pancreatic head	13.7	12.8	-8.03
Peritoneum lesion	13.9	14.3	2.88
In retroperitoneal space	12.4	11.8	-4.84

SUV1: Maximal standardized uptake value obtained on early-scan; SUV2: Maximal standardized uptake value obtained on delayed-scan; RI-SUVmax: Retention index of maximal standardized uptake value [RI-SUVmax (%)] = (SUV2 - SUV1) × 100/SUV1.