GI Flashcards
foregut
pharynx to duodenum
celiac artery
vagus n
celiac artery supplies
foregut
spleen
midugt
duodenum to tranverse colon
SMA
vagus n
hind gut
distal transverse colon to rectum
IMA
pelvic nerves
duodenal atresia
failure to recanalize
associated with Down syndrome
jejunal, ileal, colonic atresia
vascular accident
apple peel atresia
olive mass
pyloric stenosis
annular pancreas
abnormal migration of ventral pancreatic bud
lesser omentum
liver to lesser curvature
contains hepatogastric and hepatoduodenic ligaments
hepatoduodenal ligament
portal triad
hepatogastric ligament
gastric arteries
less curvature of stomach blood vessel
left gastric a.
greater curvature of stomach blood vessel
gastroepiploic aa
falciform ligament
ligamentum teres hepatis
spleen - embryo origin
mesoderm
esophageal varices
left gastric and esophageal aa
caput medusae
paraumbilical and superficial/inferfior epigastric aa
internal hemorrhoids
superior rectal a
middle or inferior rectal aa
above pectinate line
adenocarcinoma
superior rectal artery
drains to superior rectal vein –> IMV –> portal system
deep nodes
below pectinate line
squamous cell carcinoma
inferior rectal artery
inferior rectal vein –> internal pudeneal vein –> internal iliac vein –> IVC
superficial inguinal nodes
delta aminolevulinic acid
lead poisoning
need vit B6 for synthesis of ALA
periportal zone of liver
viral hepatitis
pericentral / centrilobular zone of liver
alcoholic hepatitis
ischemia
Somatostatin
inhibits VIP
D cells of pancreas
VIPoma
watery diarrhea
HYPOkalemia
ACHLORhydria
iron absorbed
duodenum, proximal jejunum
folate absorbed
jejunum
achalasia
failure of LES to relax
dysphagia to solid and liquids
risk of SCC
Squamous Cell Carcinoma of esophagus
keratin nests and pearls
smoking and alcohol – most important risk factors
achalasia, diverticular, esophageal web, hot liquids
Whipples Disease
PAS positive foamy macropphages
gram psoitive organisim
cardiac symptoms, arthralgias, neurologic symptoms
+PAS due to
glycoprotein
Type A gastritis
autoimmune
pernicious anemia
achlorhydria
affects the body
Type B gastritis
H pylori
affects antrum
risk of MALT lymphoma and adenocarcinoma
Intestinal Stomach Cancer
H pylori, type A gastritis, smoked foods
Diffuse Stomach Cancer
signet ring cells
linits plastica
malignant polyps
villous
risk of hepatocellular carcinoma
hep B and C biliary dz hemochromatosis wilson's dz, alpha1antitrypsin aflatoxin cirrhosis
Reye’s syndrome
aspirin
liver dz - microvesicular fatty change
encephalopathy
hepatic steatosis
macrovesicular fatty change
alcoholic hepatitis path
mallory bodies
Acute Hep A
balloon degeneration Councilmen bodies (apoptosis)
nodular regeneration
chronic hep
hobnail apperance of liver
alcoholic cirrhosis
increased alpha fetoprotein
hepatocellular carcinoma
cavernous hemangioma
common benign liver tumor
hepatic adenoma
bengin
OC or steroid use
angiosarcoma
malignant
exposure to arsenic, polyvinyl chloride
Budd Chiari
occlusion of IVC or hepatic veins
hypercoaguable states
black liver
Dubin-Johnson syndrome
can’t excrete conjugated bilirubin
mitochondrial antibodies
PBC
destruction of interlobular bile ducts by granulomas
PBC
PSC
onion skin bile duct
beading
hypergammaglobulinemia – IgM
mass in ileocecal valve
gallstone ileus
air in biliary tree
acute pancreatitis complications
pseudocysts, necrosis
7 alpha hydroxylase suppresion
fibrates
CA 19-9
pancreatic adenocarcinoma
migratory thrombophelbitis
trosseau’s (redness and tenderness of extremities)
pancreatic adenocarcinoma
arsenic posioning
garlic breath
dimercaprol
Courvoiser sign
palable but non tender gallbladder
usually due to adenocarcinoma at head of pancreas
pancreatic cancer RF
age, smoking, DM, chronic pancreatitis, genetic
Hep B
integrates DNA into host
left sided CC
obstruction
right sided CC
anemia, anorexia
portal vein thrombosis
portal htn, no change in liver histo
CREST - immunopath
CD4 accumulation
most likely location of colon adenocarcinoma
rectosigmoid
hereditary pancreatitis
SPINK1
periodic, non peristatlic contractions
diffuse esophageal spasm
corkscrew esophagus
vomitting causes
metabolic alkalosis
loss of acidic stomach contents
chalky white lesions in mesentery
acute pancreatitis
octreotride
somatostatin analong
treats acute variceal bleeds, acromegaly, VIPoma, carcinoid tumors
Hirschsprung Disease
failure of neural crest cells to migrate and become ganglion cells of submucosal and myenteric plexuses
imperforate anus
associated with GU tract malformations
pancreas divisum
ventral and dorsal buds fail to fuse
2 separate duct systems
dorsal pancreatic duct forms
body, tail, most of head
ventral pancreatic duct forms
unicate process
inferior/posterior portion of head
major pancreatic duct
Secretin
made in S cells of duodenum
increases Bicarb secretion
COX-2, increased levels
can be associated with colon adenocarcinoma
MTP gene
abetalipoproteinemia
abetalipoproteinemia histo
acanthocytes
foamy cytoplasm
HIV esophagitis
candida
CMV
HSV-1
lipophilic compounds metabolized by
liver
t 1/2 =
Vd x ln 2 / CL
Colon Cancer in UC pts
multifocal
early p53 mutations, late APC mutations
high histological grades
liver cysts
echinococcus
anaphylatic shock
GERD histology
elongation of lamina propriae
eosinophil/neutrophil/lymphocyte infiltrate
lactase def
decreased stool PH
increase stool osmotic gap
increase H2 breath content
H pylori - greatest concentration in
prepylroic region
anal fissure location
distal to dentate line
posterior midline
fine granular eosinophilic apperance of liver/ground glass
HBsAg tubules
toxic mega colon diagnosis
flat plain X ray
diphenoxylate
opiate anti-diarrheal
meperdine
opiate anti-diarrheal
secretory diarreha treatment
ocretide
Chron’s dz granulomas
TH1 response
hepatic steatosis - pathophys/histo
excess NADH production
decrease free FA oxidation
TG accumulation
NFKB
K(C)rohn’s disease
stimulates cytoKines
CD – HLA associations
HLA 1,5
UC - HLA associations
HLA 2
epinephrine metabolites within liver lysosomes
Dubin-Johnson syndrome
Chronic mesenteric ischemia
atherosclerosis + postprandial pain
cricopharyngeal muscle dysfunction
Zenkers
what is between SMA and aorta
transverse portion of duodenum
Indinavir
protease inhibitor
lipodystrophy, hyperglycemia, P450 inhibition
parietal cells stimulated by
gastrin, ach, histamine
parietal cell hypertrophy by
gastrin
Acute ACALCULOUS cholecystitis
no stones
pts who are hospitalized, seriously ill
pancreatic pseudocyst consists of
fibrous and granulation tissue
diarrhea and spindle cells in AIDs pt
kaposi’s
meckel diverticulum
incomplete obliteration of omphalomesenteric duct
variety of tissue types
ectopy
N acetyl cysteine
acetaminophen overdose
provides sulfhydral group
glutathione substitue
nests of uniform cells
carcinoid
gall stones in IBD due to
decrease bile acid reabsorption
Wilson dz, copper accumulation in
corena basal ganglia (basal ganglia atrophy)
lipid absorption occurs in
jejunum
diverticular protruding from wall, mechanism is
pulsion
PBC has similar histo to
GVHD
calliflower like mass with hypokalemia
villous adenocarcinoma
telescoping
intussecption
copper is removed from body by
hepatic excretion into bile
hepatic abscess
S. aureus
spordiac colon cancer pathway
APC - K-ras - p53
total gastrectomy, supplement
B12
99mTc-pertechnetate
tests for gastric mucosa (meckels)
watershed areas of GI tract
splenic flexure
distal sigmoid colon
erosions
do not fully extend through muscularis mucosa
Crohn’s dz - type of stone
oxalate calcium
Zidovudine
AZT
nucleoside reverese transcripatse inhibit
incorpated into molecule and prevent chain elongation since no free 3’oh
(prevents 3-5’ phophodiester bond)
omphalomesenteric duct
vitelline duct
halothane fulminant hepatitis histo
increase aminotransferase
increased PTT
eosinophili
weird causes of pancreatitis
increase TG, CA
Hep B – mechanism
CD8 T lymphs respond to viral antigens
gallstones caused by
increased cholesterol
low phospholipid
decreased bile acid
calcification/porecelian gallbladder
risk fro cancer, remove