What is the first-line diagnostic imaging for pancreatic cancer?

The first-line diagnostic imaging for pancreatic cancer is computed tomography (CT) of the abdomen. This imaging modality is preferred because it provides detailed images of the pancreas and surrounding structures, helping to identify tumors and assess their size, location, and extent of spread. A CT scan also allows for the evaluation of other abdominal organs and can detect complications associated with pancreatic cancer, such as metastasis or obstruction.

CT imaging is particularly useful in staging pancreatic cancer, which is crucial for determining the appropriate course of treatment. It can also help differentiate pancreatic adenocarcinoma from other types of pancreatic lesions and conditions that might mimic pancreatic cancer on imaging, such as pancreatitis or cystic lesions.

While other imaging modalities like abdominal ultrasound and MRCP (Magnetic Resonance Cholangiopancreatography) have their roles in the evaluation of pancreatic conditions, they are typically not the first-line methods for diagnosing pancreatic cancer. Ultrasound is often used as an initial screening tool, especially in certain settings, but it lacks the sensitivity and specificity of CT. MRCP, although effective for visualizing the biliary and pancreatic ducts, is more specialized and not routinely used for initial cancer diagnosis. Therefore, CT of the abdomen is the gold standard for the diagnosis and evaluation of suspected