A woman went to the emergency room for severe abdominal cramping. What diagnostic tests would be appropriate for this case, and how would the results be used to make a diagnosis

A woman went to the emergency room for severe abdominal cramping.

She was diagnosed with diverticulitis; however, as a precaution, the doctor ordered a CT scan. The CT scan revealed a growth on the pancreas, which turned out to be pancreatic cancer—the real cause of the cramping. Pt has left lower quadrant pain. Pt has a history of GI bleed 4 years ago

-What diagnostic tests would be appropriate for this case, and how would the results be used to make a diagnosis?
-Would you reject/accept the current diagnosis? Why or why not? Identify three possible conditions that may be considered as a differential diagnosis for this patient. Explain your reasoning using at least three different references from current evidence-based literature.