Purpose
To describe plain and contrast-enhanced computed tomography (CT) findings of chemotherapy drug-related acute pancreatitis in patients with malignances.
Methods
Twenty-two patients with first clinical and/or biochemical evidence of pancreatitis who underwent plain and/or contrast-enhanced CT while being treated with chemotherapy were retrospectively included in the study. Chemotherapy drug-related acute pancreatitis (CDRAP) diagnosis was obtained based on clinical, imaging, and biochemical findings. CT features of CDRAPwere recorded as follows: normal pancreas morphology, pancreatic enlargement (diffuse or focal), enhancing but heterogeneous parenchyma (diffuse or focal), peripancreatic stranding, acute peripancreatic fluid collection, pseudocyst, acute necrotic collections (pancreatic necrosis and peripancreatic necrosis) and main pancreatic duct dilatation. In addition, the baseline demographics, clinical, biochemical, other complications, chemotherapy drugs, and outcomes of the pancreas were also included.
Results
CT showed that five (23%) patients demonstrated normal pancreas, whereas 17 (77%) patients presented with acute pancreatitis changes in clinically diagnosed CDRAP patients. The CT findingsof 22 CDRAPs were as follows: diffuse (n=7) or focal (n=8) pancreatic enlargement, diffuse (n=6) or focal (n=1) heterogeneousenhancement, peripancreatic stranding (n=5), acute peripancreatic fluid collection (n=7), and pseudocyst (n=1). No patients developed acute necrotic collections or dilatation of the main pancreatic duct. The severity classification of acute pancreatitis in most people (81%) wasmild pancreatitis. Other complications were drug-induced hepatitis (n=3), polycranial neuropathy (n=1), and death (n=1).Regarding theoutcomes of the pancreas, two patients developed acute pancreatitis changes on CT in five initial normal pancreas morphologies.
Conclusion
Chemotherapy-related acute pancreatitis mainly presented as interstitial edematous pancreatitis and/or a normal pancreas on CT. Most living patients experienced mild acute pancreatitis. Patients with other risk factors for acute pancreatitis might easily develop CDRAP, which needs more attention.