Flashcards in EXAM #3: PANCREATITIS Deck (45)
What is the most common etiology of metabolic acute pancreatitis?
What are the genetic underpinnings of acute pancreatitis?
PRSS1= trypsinogen mutation
SPINK1= mutation in trypsin inhibitor mutation
What are the most common causes of mechanically induced acute pancreatitis?
What are the vascular etiologies of acute pancreatitis?
What are the infectious etiologies of acute pancreatitis?
3) Mycoplasma peumonia
How is acute pancreatitis initiated?
Trypsin activation leading to autodigestion of the pancreas
What is the specific serum enzyme that is indicative of acute pancreatitis?
How does acute pancreatitis present?
- Constant epigastric pain radiating to the back
*Full-blown acute pancreatitis is a medical emergency*
What causes hypocalcemia seen in acute pancreatitis?
Consumption of Ca++ in soponification of peripancreatic fat
****This is associated with a POOR prognosis
What serum lab elevation is indicative of a pancreatic pseudocyst?
Outline the spectrum of severity in pancreatitis.
1) Acute INTERSTITIAL= trivial inflammation and edema
2) Acute NECROTIZING= extensive necrosis
How do you differentiate between a perforate ulcer and pancreatitis?
What is a pancreatic pseudocyst?
Collection of blood, debris, tissue, and fluid WITHOUT a true epithelial lining
List the complications of acute pancreatitis.
3) Acute renal failure
5) Pancreatic abscess
6) Pancreatic pseudocyst
7) Duodenal obstruction
What is the main difference between acute and chronic pancreatitis?
- Acute is reversible
- Chronic is irreversible
****Chronic is caused by relapsing acute pancreatitis*****
What factors drive the fibrosis seen in chronic pancreatitis?
*Both are induced by chronic inflammation
In the US, what is the most common cause of chronic pancreatitis?
Long-term alcohol abuse
What is the role of CFTR mutations in chronic pancreatitis?
CF can lead to early onset pancreatitis (+ lung disease)
- CFTR decreased bicarbonate
- Less bicarbonate lead to "slugging" of exocrine pancreas
What is the relationship between alcohol and ductal plugs in alcohol induced chronic pancreatitis?
- Alcohol causes increased protein secretion in exocrine pancreas
- Proteins can form "ductal plugs"
- Ductal plugs may calcify
What are the buzzwords for the histologic appearance of chronic pancreatitis?
1) Acinar drop out
2) Inflammatory infiltrate
4) Protein/ ductal plugs
What are the sequela of chronic pancreatitis?
1) DM--from fibrosis involving the endocrine pancreas
2) Steatorrhea/ fat malabsorption
3) Calcification of the pancreas
What disease is associated with congenital pancreatic cysts?
What are the clinical features of Von-Hippel Lindau Disease?
- Mutation in chromosome 3
- Renal cell carcinoma and pheochromocytoma are common
- CYSTS in pancreas, liver, and kidneys
- Angiomas in retina, cerebellum, and brainstem
What are the three major types of cystic neoplasia involving the pancreas?
1) Microcystic serous cystadenomas
2) Mucinous cystic tumors
3) Solid pseudopapillary tumor
What are the clinical features of microcystic serous cystadenomas?
- Seen in elderly women
*Cuboidal epithelum with serous fluid
What are the clinical features of mucinous cystic tumors?
- Seen in young women
*Columnar epithelium with mucinous fluid
What are Intraductal Papillary Mucinous Neoplasms?
- Intrapapillary mucinous neoplasms are tumors (neoplasms) that grow within the pancreatic ducts (intraductal)
- characterized by the production of thick fluid (mucous) by the tumor cells
Where do IPMNs commonly occur?
Head of the pancreas
IPMNs: benign or malignant?
Can be benign, borderline malignant, or malignant
*Penetration of the basement membrane= malignant*