Figure 1.

Representative patient on PET/CT (False-Positive) compared to CECT (True-Negative): A 34-year-old male had abdominal pain for 2 months, worsening in the last 10 days. Serum CA19-9 was normal (34.1 U/mL). (A) PET/CT showed significantly increased ¹⁸F-FDG uptake area in the tail of the pancreas (SUVmax 5.5). The edge of the lesion was indistinct and seemed to be closely related to the stomach wall; it was considered to be malignant. (B) Density of the lesion was relatively low at every phase. Fat spaces around the pancreas were clear on CECT (benefits from the higher resolution), suggesting chronic pancreatitis. Patient underwent distal pancreatectomy, and histopathology revealed chronic pancreatitis with small abscesses. No special complaints during follow-up (>23 months).