Pathology 2 Flashcards
(98 cards)
Autosomal Dominant mutation of APC gene on Chromosome 5q. 2-hit hypothesis
Familial adenomatous polyposis
Thousands of polyps arise at a young age; pancolonic
Familial adenomatous polyposis
FAP + osseous and soft tissue tumors, congenital hypertrophy of retinal pigment epithelium
Gardner Syndrome
FAP + malignant CNS tumor
Turcot Syndrome
Hereditary nonpolyposis colorectal cancer molecular pathway
Autosomal Dominant mutation of DNA mismatch repair genes (microsatellite instability pathway)
Apple Core Lesion
Colorectal Cancer
Iron deficiency Anemia in Males
Colorectal cancer is of high suspicion
CEA tumor marker
Good for monitoring recurrence not screening for colorectal cancer
Molecular Pathway causing Sporadic colorectal cancer
APC/beta-catenin (chromosomal instability)
Pathway of CRC pathogenesis
normal colon, (loss of APC) colon at risk, (kRAS mutation) adenoma, (loss of p53 of DCC) increases tumorigenesis so carcinoma
Stellate cell
causes fibrosis of the liver
Effects of portal HTN
esophageal varices (hematoemesis), peptic ulcer, melena, splenomegaly, caput medusa, ascites, gastropathy, anorectal varices
Effects of Liver Cell Failure
Hepatic encephalopathy, scleral icterus, fetor hepaticus (musty breath), spider nevi, gynecomastia, jaundice, testicular atrophy, asterixis (hand tremor), bleeds, anemia, ankle edema
Alkaline Phosphatase (ALP)
obstructive hepatobilliary disease, HCC, bone disease
ALT > AST
Viral hepatitis
AST > ALT
Alcohol hepatitis
Amylase
Acute Pancreatitis & Mumps
Ceruloplasmin
decreased in Wilson Dx
gamma -glutamiyl transpeptidase(GGT)
Increased in liver and biliary disease, associated with alcohol
Lipase
Acute Pancreatitis (most specific)
Marker of infection, first to increase when HBV resolves, this goes away. If not it is chronic HBV
HBsAg
Marker is positive when a patient is infectious and can give HBV to another person
HBeAg
Only Ab seen in the window phase of Hep B infection
IgM (HBcAb)
Ab in resolved phase of Hep B infection
IgG, also seen in chronic HBV