Chapter 17: Pancreatic Pathology

Pancreatic Pathology video summary explores Pancreatic Pathology, detailing the spectrum of congenital, inflammatory, and neoplastic conditions affecting the pancreas. We begin by defining congenital anomalies such as pancreatic divisum, the clinical implications of annular pancreas encircling the duodenum, and the risks associated with ectopic pancreatic tissue in the gastrointestinal tract. A significant portion of the discussion focuses on acute pancreatitis, examining diverse etiologies including gallstones, alcohol use, trauma, and scorpion stings, while explaining the pathophysiology of acinar cell injury leading to enzymatic autodigestion. We break down clinical presentations like radiating epigastric pain, diagnostic markers such as amylase and lipase, and severe complications including ARDS, DIC, hypocalcemia, and the formation of pancreatic pseudocysts characterized by granulation tissue lacking an epithelial lining. The video then contrasts this with chronic pancreatitis, highlighting irreversible fibrosis, atrophy, pancreatic insufficiency, and calcifications often seen in alcohol use disorder or IgG4-related autoimmune disease. We also differentiate between various pancreatic cystic neoplasms, such as benign serous cystadenomas associated with VHL mutations and mucinous neoplasms like IPMN which may harbor GNAS mutations. Finally, the chapter analyzes pancreatic tumors, distinguishing between neuroendocrine (islet cell) tumors—including Insulinomas, Gastrinomas causing Zollinger-Ellison syndrome, Glucagonomas, Somatostatinomas, and VIPomas causing WDHA syndrome—and the highly aggressive pancreatic adenocarcinoma. We cover the epidemiology, risk factors like smoking, clinical signs such as migratory thrombophlebitis and obstructive jaundice, tumor markers CA19-9 and CEA, and the grim prognosis associated with these ductal epithelial malignancies.