Final answer:
Pancreatic adenocarcinoma is the neoplastic disease of the pancreas that is the fifth most common cause of cancer death within the United States. It is a type of cancer that originates in the exocrine cells of the pancreas.
Step-by-step explanation:
The neoplastic disease of the pancreas that is the fifth most common cause of cancer death within the United States is Pancreatic adenocarcinoma. Pancreatic adenocarcinoma is a type of cancer that originates in the exocrine cells of the pancreas, specifically in the ducts that carry digestive enzymes.
Smoking is a major risk factor for pancreatic adenocarcinoma, and it is more common in individuals above the age of 60. It is often diagnosed at a late stage, making surgical intervention difficult.