Preoperative Imaging and Operative Procedures

ProcedurePatient 1Patient 2Patient 3Patient 4Patient 5
Conventional imaging
 Endoscopic ultrasoundFNFNFNNANC
111In-DOTA-exendin-4 SPECT/CT
 Detection of tumor 4 h after injectionFNTPTP+FN
 Tumor-to-background ratio at 4 hNA1.043.871.96NA
 Detection of tumor 72 h after injectionFPTPTP+FP
 Tumor-to-background ratio at 72 hNA1.123.932.04NA
68Ga-DOTA-exendin-4 PET/CT
 Detection of tumorTPTPTP+TP
 Tumor-to-background ratio2.003.796.875.9532.42
 SUVmax of tumor5.510.849.12530.8
Surgery and histology
 Surgical procedureEnucleationPancreas tail resectionPancreas tail resectionNot    operatedEnucleation
 LocalizationBody/tail  transitionTailTailNATail
 Dimension (mm)81010NA18
  • ASVS = selective arterial calcium stimulation and hepatic venous sampling; SUVmax = maximal standardized uptake value; NA = not applicable; NC = not conclusive; FN = false-negative; FP = false-positive; TP = true-positive; − = negative result; + = positive result.