Gastroenterology Flashcards
cholelithiasis path
cholesterol: Fat, Female, Forty, Fertile, and Native Americans
pigmented: hemolysis, African Americans
cholelithiasis pt
colicky RUQ pain, radiates to the shoulder, worse with fatty foods
cholelithiasis dx
RUQ US = gallstones
cholelithiasis tx
cholecystectomy (elective) ursodeoxycholic acid (nonsurgical)
cholecystitis path
gallstones in cystic ducts
- pericholecystic fluid
- thickened wall
- gallstones
cholecystitis pt
constant RUQ pain
+ Murphy’s sign
+ inflammation (fever, increase wbc)
cholecystitis dx
RUQ U/S = cholecystitis
HIDA scan if equivocal
cholecystitis tx
NPO, IVF
cholecystectomy (urgent)
Cholecystostomy (poor surgical candidate)
Choledocolithiasis path
gall stones in common bile duct
+/- pancreatitis
+/- hepatitis
+ painful jaundice
Choledocolithiasis pt
constant RUQ pain AND jaundice
+ Murphy’s sign
+ inflammation (fever, increase wbc)
Choledocolithiasis dx
RUQ U/S = dilated CBD
MRCP if uncertain
Choledocolithiasis tx
NPO, IVF
ERCP urgently … OR
cholecystectomy with intraoperative cholangiogram
cholangitis path
gallstone in CBD + infection - GNR, anaerobes
cholangitis pt
Charcot’s triad = RUQ pain, jaundice, fever
Reynold’s pentad = Charcot’s triad + hypotension, AMS
cholangitis dx
RUQ U/S = dilated biliary duct
no time for MRCP or HIDA
cholangitis tx
NPO, IVF, + IV abx (ciprofloxacin + metronidazole)
ERCP emergently
esophagitis path
Pill-induced Infectious Eosinophilic Caustic GERD
esophagitis pt
odynophagia, dysphagia
esophagitis dx
EGD with bx
esophagitis tx
dz-specific
antiacid (PPI, H2)
pill-induced esophagitis path
pill gets stuck
NSAIDs, abx, bisphosphonates, HIV
pill-induced esophagitis pt
esophagitis
pill-induced esophagitis dx
EGD w bx
pill-induced esophagitis tx
EGD -> remove pill
remove offending agent
time and PPI
pill-induced esophagitis f/u
no recumbency, water with pills
infectious causes of esophagitis
candida
HSV
CMF
HIV
candida esophagitis
oral thrush
tx: fluconazole
HSV esophagitis
oral lesions
tx: valacyclovir
CMV esophagitis
tx: valagancyclovir
HIV esophagitis
opportunistic infections
tx: HAART
eosinophilic esophagitis path and pt
asthma, allergies, atopy
allergic reaction
eosinophilic esophagitis dx
EGD w bx >16 Eos/hpf
trial PPI x 6wks
eosinophilic esophagitis tx
oral aerosolized steroids
caustic esophagitis path
kid (accidental ingestion)
adult (suicide attempt)
alkaline»_space;> acid
caustic esophagitis pt
larynx -> hoarse, stridor
esophagus -> drooling
caustic esophagitis dx
EGD w bx
caustic esophagitis tx
low severity … liquid diet
high severity … NPO x 72h EGD
caustic esophagitis f/u
NEVER neutralize
esophageal motility disorders
NOT progressive
foods AND liquids
esophageal motility disorders dx
barium, manometry, EGD
esophageal mechanical disorders
progressive
foods, THEN liquids
esophageal mechanical disorders dx
barium, EGD
achalasia path
motility
absent myenteric plexus
LES cannot relax
achalasia pt
knot/ball of food
stuck at GE junction
achalasia dx
barium = bird’s beak
manometry - LES high tone
EGD w bx r/o cancer (pseudoachalasia)
achalasia tx
botulinum (poor surgical candidate)
dilation (perforates)
myotomy (best)
achalasia f/u
GERD (if you take too much)
scleroderma path
motility
collagen deposition
LES cannot contract
scleroderma pt
CREST anti-centromere
SS - Anti-Scl-70
Relentless GERD
scleroderma dx
barium = normal
manometry = LES low tone
EGD w bx = collagen
scleroderma tx
PPI
scleroderma f/u
serology
diffuse esophageal spasm path
motility
random sustained contractions
diffuse esophageal spasm pt
‘heart attack’ // better with nitro
exacerbated by cold liquids
diffuse esophageal spasm dx
r/o ACS first (trops, ekg)
barium = corkscrew esophagus
manometry = random contractions
no EGD
diffuse esophageal spasm tx
CCB, nitro
Schatzki ring path
mechanica
ring @ GE junction
schatzki ring pt
‘steak house dysphagia’ = infrequent, large caliber foods get stuck
Schatzki ring dx
barium = narrowed lumen/ring
EGD w bx = ring
Schatzki ring tx
lysis during EGD
esophageal webs path
mechanical
Plummer-Vinson syndrome
esophageal webs pt
woman with dysphagia, iron deficiency anemia, webs and eventually
esophageal cancer
esophageal webs dx
barium = webs
esophageal webs tx
EGD to screen for cancer only
iron for iron deficiency anemia
esophageal webs f/u
do not do esophagectomy
zenker’s diverticulum path
mechanica
diverticulum
zenker’s diverticulum pt
old guy with halitosis … chokes while eating and regurgitates undigested food
zenker’s diverticulum dx
barium = pouch
EGD w bx = visualization
zenker’s tx
surgical resection (endoscopic or open)
esophageal stricture path
GERD grade IV
esophageal stricture pt
GERd, dysphagia, weight loss
esophageal stricture dx
barium = symmetric
EGD bx = no cancer
esophageal stricture tx
PPI, dilation
esophageal cancer path
Adeno = bottom 1/3 esophagus = GERD SCC = upper 1/3 esophagus = smoking, EtOH
esophageal cancer pt
GERD, dysphagia, weight loss
esophageal cancer dx
Barium = asymmetric
EGD w bx = cancer
esophageal cancer tx
chemo/radiation, surgery
peptic ulcer disease path
2 locations: gastric, duodenal 5 etiologies: - H. pylori: single - NSAIDs: multiple shallow - Malignancy: heaped, necrotic - Curling's: burns - Cushing's: steroids - gastrinoma
PUD pt
asymptomatic (20%)
gnawing epigastric pain
pain increase w food (gastric)
pain decrease w food (duodenal)
PUD dx
EGD w bx
- r/o malignancy
- r/o H. pylori
PUD tx
PPI
stop EtOH
stop NSAIDs
stop smoking
H. pylori path
infection
H. pylori pt
Asymptomatic (85%)
PUD + dyspepsia (15%)
MALToma (~1%)
H. pylori dx
serology = test and treat (once)
urea breath test = initial test
stool antigen = eradication
EGD w bx = best (histology)
H. pylori tx
triple therapy
- clarithromycin
- amoxicillin (MTZ backup)
- PPI
H. pylori f/u
MALToma … treat H. pylori, tx the cancer
Zollinger-Ellison (gastrinoma) path
gastrinoma -> decrease gastric pH
gastrinoma pt
big, virulent, refractory ulcers …
and diarrhea
gastrinoma dx
gastrin < 250 = normal between = secretin stim > 1600 = gastrinoma *** SRS *** CT scan
gastrinoma tx
resection
GERD path
acid burns esophagus
LES weakened
esophagitis
GERD pt
typical:
- burning CP
- worse with recumbency, spicy food
- better with antacid, sitting up
atypical:
- hoarseness, coughing, stridor
- nocturnal asthma
GERD dx
PPI + lifestyle x6wks
EGD w bx (start here with alarm sxs)
24-hr pH monitoring
GERD tx
GERD: PPI
metaplasia: increase PPI
dysplasia: local ablation
adenocarcinoma: resection
GERD f/u
surveillance EGDs
Nissen … more lifestyle than treatment
gastroparesis path
emptying problem
idiopathic/diabetes
gastroparesis pt
chronic n/v
abdominal pain with eating
peripheral neuropathy
gastroparesis dx
EGD = r/o other disease
nuclear emptying study
>60% at 2hrs, >10% at 4hrs
gastroparesis tx
avoid opiates
blood glucose control
pro kinetic agents (metoclopramide, erythromycin, domperidone)
low-fiber, small volume diet
cyclic vomiting syndrome path
+ THC
cyclic vomiting syndrome pt
habitual marijuana
n/v in cycles (weeks)
cyclic vomiting syndrome dx
clx -> EGD -> emptying
cyclic vomiting syndrome tx
stop THC
gastric adenocarcinoma path
East Asian cuisine
nitrites
gastric adenocarcinoma pt
early satiety, weight loss, obstruction
gastric adenocarcinoma dx
EGD w bx = signet
PETCT +/- Pan CT
gastric adenocarcinoma tx
resection and chemo
evaluation of diarrhea: severe
severe: fever >/= 104, blood/pus, electrolytes, abx use, duration >3 d, immuno decrease
evaluation of diarrhea steps
step 1: c diff
step 2: stool wbc and rbc
step 3: no wbc, no rbc -> ova + parasites; + wbc, +rbc -> colonoscopy
step 4: c. diff -> tx
c. diff path
overgrowth after recent abx use
c. diff pt
watery diarrhea, smell
c. diff dx
c. diff NAAT
c. diff tx
1st: PO MTZ = po vanc
2nd: PO MTZ = po vanc
3rd: fidaxomicin
c. diff f/u
refractory: fecal transplant
diarrhea etiology to risk factor: entero
c. diff - antibiotic use
diarrhea etiology to risk factor: toxic
ETEC - travelers, central america vibrio cholera - 3rd world, no boiling s. aureus - proteinaceous foods b. cereus - reheated rice giardia - camping, fresh water
HUS/TTP path
EHEC 0157:H7
HUS/TTP pt
blood, diarrhea after meat
increase BUN/Cr
anemia
HUS/TTP dx
smear = MAHA = schistocytes
shiga-like toxin
HUS/TTP tx
supportive care
plasma exchange transfusion
secretory diarrhea
stool osm gap --- fecal wbc --- fecal rbc --- mucous --- change NPO no nocturnal symptoms + fecal fat ----
osmotic diarrhea
stool osm gap fecal wbc --- fecal rbc --- mucous --- change NPO + nocturnal symptoms no fecal fat *** FAT ***
inflammatory diarrhea
stool osm gap fecal wbc + fecal rbc + mucous + change NPO --- nocturnal symptoms --- fecal fat ---
VIPoma path
VIP
VIPoma pt
chronic diarrhea
VIPoma dx
VIP
VIPoma tx
resection
VIPoma f/u
don’t pick VIPoma
ZE (gastrinoma) path
gastrinoma
ZE pt
virulent and refractory PUD
diarrhea
ZE dx
gastrin <250 = ruled out between = secretin stimulations >1600 = ruled in SRS vs CT
ZE tx
resection
carcinoid path
serotonin
carcinoid pt
right sided heart fibrosis
flushing + diarrhea
carcinoid dx
5-HIAA urine
carcinoid tx
resection
celiac disease path
gluten allergy
autoimmune - IgA
celiac disease pt
diarrhea, bloating, weight loss
dermatitis herpetiformis
celiac disease dx
1st: antibodies
- Ttg
- Endomysial
EGD w bx = blunted villi
celiac dz tx
avoid gluten 3-4mo
celiac dz f/u
avoid gluten is the wrong answer for diagnosis
lactose intolerance path
age, asians
lactose intolerance pt
carb malabsorption
lactose intolerance dx
avoiding dairy
lactose intolerance tx
lactose enzyme
Whipple’s disease path
T. whipplei
Whipple’s disease pt
malabsorption + brain + joint + lymph
whipple’s disease dx
EGD w bx
- PAS +
- organisms
whipple’s disease tx
TMP-SMX
doxycycline
absorption in general: pancreas
Pancreas = protein
absorption in general: fat
A - night blind
D - osteoporosis
E - nystagmus
K - bleeding
absorption in general: duodenum
Folate
Iron
Calcium
+ carbs
absorption in general: TI
bile salts and B12
diverticulosis path
increase intraluminal pressures, false pouches
diverticulosis pt
> 50yo, decrease fiber/vegetables
increase red meat
asx screening
diverticulosis dx
colonoscopy
diverticulosis tx
no treatment
high fiber
diverticulosis f/u
+ fruits/vegetables, fiber diet
diverticular spasm path
contractions of diverticula
diverticular spasm pt
post-prandial LLQ abdominal pain relieved with BM (sounds like IBS)
diverticular spasm dx
clx vs IBD
diverticular spasm tx
high-fiber diet
diverticular hemorrhage path
arteriole ruptures in dome
diverticular hemorrhage pt
painless hematochezia, can be fatal or self-limiting
diverticular hemorrhage dx
colonoscopy (for diverticulosis)
angiogram (for embolization)
diverticular hemorrhage tx
embolize (severe)
self-limiting (often)
diverticulitis path
fecalith blocks diverticula and infection grows
microperforation to abscess
diverticulitis pt
left sided appendicitis
constant LLQ pain
fever/leukocytosis
local peritoneal signs
diverticulitis dx
KUB to r/o frank perforation
CT w IV and PO contrast
diverticulitis tx
mild: liquid diet … po abx
severe: NPO … IV abx
abscess: NPO … IV abx + drainage
perforation: exlap w IV abx
refractory: hemicolectomy
colon cancer path
premalignant lesions = polyps >50 y/o, ETOH smoking, increase BMI processed red meat inflammation (UC, Crohn's, PSC)
colon cancer pt
1 - asymptomatic screen
2 - iron deficiency anemia >50, man
3 - change caliber of stool with alternating bowel habits
colon cancer dx
colonoscopy w bx
- age 50 q10y
colon cancer tx
polyp - polypectomy
stage I/II - colectomy
stage III/IV - chemo (FOLFOX, FOLFIRI)
colon cancer ppx
screening 50-75 (+/- 85)
- colonoscopy q10y
- flex sig q5y + FOBT q3y
- FOBT q1y
- FIT q1y
familial adenomatous polyposis path
APC gene
familial adenomatosis polyposis pt
1000s of polyps by 20
cancer by 40
dead by 50
familial adenomatosis polyposis dx
colonoscopy before 20
familial adenomatosis polyposis tx
prophylactic colectomy
HNPCC/Lynch path
DNA mismatch repair
3 family members
2 generations
1 premature cancer
HNPCC/Lynch pt
colon cancer
HNPCC/Lynch dx
biopsy
HNPCC/Lynch tx
resection
HNPCC/Lynch f/u
colorectal
endometrial
ovarian
turcot
brain tumors and colon cancer
Turcot …. Turban on your head
gardner
jaw tumors and colon cancer
Peutz-Jeghers
spots on the mouth, small intestinal tumors, colonic hamartomas
upper GI bleed
hematemesis, melena, hematochezia
lower GI bleed
melena, hematochezia
handling a GI bleed
2 large bore IVs IVF bolus type and cross, transfuse as needed IV PPI call GI for EGD --------------------- octreotide (cirrhosis) ceftriaxone (cirrhosis)
varices path
portal HTN
varices pt
cirrhotic with GI bleed
varices tx
stabilize….
1st: octreotide
then: balloon
EGD: banding
refractory: TIPS
transplant
varices f/u
ceftriaxone for SBP ppx
PUD path
H. pylori; NSAIDs, Ca, others
PUD pt
dyspepsia, GI bleed
PUD dx
EGD w bx
PUD tx
PPI
mallory-weiss path
superficial tear in mucosa
mallory-weiss pt
weekend warriors, self-limiting
mallory-weiss dx
EGD
mallory-weiss tx
supportive
boerhaave’s path
transmural tear in mucosa
boerhaave’s pt
ETOH/bulimics, retching
fever, dyspnea
air in mediastinum
boerhaave’s dx
1st: gastrograffin
then: barium
best: EGD
EGD w bx
boerhaave’s tx
surgery
dieulafoy’s lesion path
normal variant
dieulafoy’s lesion pt
painless abrupt bleed
dieulafoy’s lesion dx
EGD
dieulafoy’s lesion tx
subtotal gastrectomy
hemorrhoids path
internal: bleed but do not hurt
external: no bleed, but do hurt
hemorrhoids pt
blood on toilet paper
hemorrhoids dx
clx
hemorrhoids tx
sitz baths -> banding
diverticular hemorrhage path
arteriole in dome of diverticula
diverticular hemorrhage pt
> 50yo
painless BRBPR
diverticular hemorrhage dx
colonscopy
diverticular hemorrhage tx
hemicolectomy
mesenteric ischemia path
‘gut attack’
mesenteric ischemia pt
vasculopath, AFib
pain out of proportion to exam (acute)
h/o pain while eating, weight loss (chronic)
mesenteric ischemia dx
angiogram
colonscopy
mesenteric ischemia tx
revascularize
resect
ischemic colitis path
watershed areas
ischemic colitis pt
hypotension first, then GI bleed
painful BRBPR
ischemic colitis dx
colonoscopy
ischemic colitis tx
supportive
hemolysis/hematoma path
excess bilirubin from rbc turnover
hemolysis/hematoma pt
hemolysis
resolving hematoma
hemolysis/hematoma dx
increase bilirubin, indirect
hemolysis/hematoma tx
monitor for resolution
diagnose hemolytic disease
painless obstructive jaundice path
cancer and stricture
painless obstructive jaundice pt
weight loss, clay colored stools, jaundice
painless obstructive jaundice dx
dramatic increase in bilirubin, direct
RUQ U/S = dilation
MRCP = lesion
EUS (pancreas) ERCP (biliary)
painless obstructive jaundice tx
resection
painful jaundice path
gallstones
painful jaundice pt
RUQ pain, tenderness
Murphy’s sign
worse on eating
painful jaundice dx
RUQ U/S shows gallstones, dilated ducts
MRCP for dx
ERCP for intervention
painful jaundice tx
ERCP or intraop cholangiogram
viral hepatitis path
Hep B (both) -- immuno decrease Hep C (chronic)
viral hepatitis pt
IVDA = HepC Sex = HepB
viral hepatitis dx
Hep C Ab
Hep B Ab
viral hepatitis tx
direct acting agonists
ribavirin + IFN
Wilson’s disease path
copper depositions in basal ganglia, eyes, and liver
Wilson’s disease pt
basal ganglia = chorea
liver = cirrhosis
eyes = Kayser-Fleischer rings; ceruloplasmin
Wilson’s disease dx
1st: slit lamp
then: ceruloplasm, urine Cu
best = bx = increase Cu liver
Wilson’s disease tx
penicillamine
transplant
Wilson’s disease r/u
cirrhosis + picture of eye = wilson
hemochromatosis path
iron absorption, iron overload
hemochromatosis pt
bronze diabetes = DM, cirrhosis, and hyperpigmentation
hemochromatosis dx
1st: iron studies
- ferritin >1000
- transferrin >50%
best: biopsy = increase Fe
hemochromatosis tx
phlebotomy, deferoxamine
alpha1 antitrypsin deficiency path
above
alpha1 antitrypsin deficiency pt
COPD + cirrhosis
alpha1 antitrypsin deficiency dx
bx = PAS + macrophages
alpha1 antitrypsin deficiency tx
transplant
primary sclerosing cholangitis path
extra hepatic, goes with UC, IBD
primary sclerosing cholangitis pt
men present with pruritus and jaundice, age 30-50
primary sclerosing cholangitis dx
MRCP = beads on a string ERCP = bx = onion skin fibrosis
primary biliary cirrhosis path
intrahepatic NO association with UC, IBD
primary biliary cirrhosis pt
women with pruritus and jaundice
30-50y/o
primary biliary cirrhosis dx
AMA
imaging = normal
best = biopsy
primary biliary cirrhosis tx
transplant
ETOH path
ETOH
ETOH pt
ETOH
ETOH dx
ETOH
ETOH tx
stop ETOH
transplant
NASH/NAFL path
fatty liver disease
NASH/NAFL pt
cirrhotic changes and there isn’t another cause you can find
obese people with ‘obese’ limits
NASH/NAFL dx
1st: ultrasound
best: bx
NASH/NAFL tx
transplant
cirrhosis path
bridging fibrosis in regenerating islands of good liver
cirrhosis pt
asx until advanced then... increase bilirubin = jaundice increase bile salts = pruritus decrease factor II, VII, IX, X = bleeding, increase INR decrease albumin = 3rd spacing fluid portal HTN = ascites estrogen = palmar erythema, spider angiomata, gynecomastia splenomegaly = decrease platelets
cirrhosis dx
multiple testing 1st: U/S = fatty liver, small monitor: LFTs, Cr, INR then = triple phase CT (HCC) best: transjugular biopsy
cirrhosis tx
irreversible once cirrhotic
stop drinking ETOH
vaccinate HepA + HepB
transplant
cirrhosis f/u
screen AFP + RUQ U/S q6mo (HCC)
hepatic encephalopathy path
ammonium
hepatic encephalopathy pt
altered with asterixis
hepatic encephalopathy dx
clx
hepatic encephalopathy tx
lactulose, rifaximin, zinc
varices path
porto-caval shunt in esophagus
portal HTN
varices pt
asx screen vs. vigorous GI bleed
varices dx
EGD
varices tx
bleeding = banding
(ceftriaxone, octreotide)
not bleeding = nadolol, propranolol
refractory = TIPS
ascites path
fluid in belly
SAAG = serum alb - fluid alb
ascites pt
>/= 1.1 portal HTN - cirrhosis - right CHF non <1.1 - TB - Ca
ascites dx
paracentesis = bx = SAAG
ascites tx
furosemide spironolactone therapeutic tap <2g Na <2L H2O
SBP path
spontaneous = strep, GNR
SBP pt
asx
fever and abdominal pain
SBP dx
paracentesis >250 polys
culture is done, but not needed
SBP tx
ceftriaxone
SBP f/u
TP <1.0 = FQ
secondary bacterial peritonitis path
perforation of hollow viscous
secondary bacterial peritonitis pt
abdominal pain, fever, cirrhosis
secondary bacterial peritonitis dx
paracentesis >250 polys
>/= 2 organisms seen
secondary bacterial peritonitis tx
stop ETOH
transplant
hepatocellular carcinoma path
cirrhosis
Hep B, HIV
HCC pt
asx screen
HCC dx
screen = RUQ U/S + AFP
triple phase CT
HCC tx
resect
transplant
RFA, TACE
primary biliary cirrhosis path
intrahepatic NO association with UC, IBD
primary biliary cirrhosis pt
women with pruritus and jaundice 30-50
primary biliary cirrhosis dx
AMA
imaging = normal
best = biopsy
primary biliary cirrhosis tx
transplant
pancreatitis path
ETOH (#1), gallstones (#2)
…. TGs, drugs, ERCP
pancreatitis pt
boring epigastric pain that radiates to the back, relief leaning forward, pain leaning back
anorexia, n/v
Cullen (umbilical hematoma)
Turner (flank hematoma)
pancreatitis dx
lipase >3x ULN
amylase p
CT scan only if equivocal
U/S or MRCP (etiology only)
pancreatitis tx
NPO, IVF, analgesia
reseed on demand
pancreatitis f/u
RUQ U/S r/o gallstones
BUN is single best mortality lab
Apache II»_space; Ranson’s criteria
necrotizing pancreatitis path
severe pancreatitis
infected pancreatitis
necrotizing pancreatitis pt
acute pancreatitis + worsening outcome
necrotizing pancreatitis dx
CT scan shows necrosis
FNA = bx required before abx
necrotizing pancreatitis tx
IV meropenem if + FNA
pancreatic pseudocyst path
epithelial lined pseudocyst
after pancreatitis
pancreatic pseudocyst pt
3-7wks
early satiety, abdominal pain
bloated belly
pancreatic pseudocyst tx
<6cm and <6wks = wait
>6cm OR >6wks = drain
chronic pancreatitis path
recurrent acute pancreatitis
chronic pancreatitis pt
chronic pain
exacerbations without increase lipase
chronic pancreatitis dx
CT scan = calcifications
chronic pancreatitis tx
pain control
NO SURGERY
Hep A path
fecal-oral, RNA
Acute only
Hep A pt
non-immunized
acute inflammation
⇈ AST, ⇈ ALT
diarrhea
Hep A dx
IgM = acute IgG = immune
Hep A tx
vaccinate
Hep B path
sex > drugs (needles) and blood
DNA
Hep B pt
good immune = acute, fulminant
bad immune = chronic, cancer
Hep B dx
Hep B s Ag = infection Hep B e Ag = infectivity Hep B s Ab IgM = early infection Hep B s Ab IgG = immune Hep B c Ab = immune, exposed
Hep B tx
vaccinate
Hep B f/u
HCC
focus on dx
Hep D (RNA) needs B, makes B worse
Hep C path
blood (needles), RNA
sex not a risk factor on its own
Hep C pt
chronic carrier
Hep C viral load
Hep C dx
Hep C ab
Hep C tx
direct acting antagonist
Hep C f/u
HCC
focus on dx
Hep C diagnosis
Ab -, HCV RNA + => infection
Ab +, HCV RNA + => infection
AB +, HCV RNA - => immune
AB -, HCV RNA - => unexposed
Crohn’s disease pop
20-30 and again 50-75
Crohn’s disease bx
transmural + noncaseating granulomas
Crohn’s disease pt
watery diarrhea and weight loss
Crohn’s disease Ca
no risk for cancer
Crohn’s disease extra
fistulas
TI: decrease B12, decrease fats
Duod: decrease Fe, decrease Ca = osteoporosis
Crohn’s disease surg
fistulotomy
drain abscess
Crohn’s disease tx
mild: 5-ASA compounds don't work Mod: 6-MP, AZA ... MTX Severe: TNF-1 = infliximab flare: - r/o infection with c diff - steroids, cipro, metronidazole - perianal disease, drain abscess
UC pop
20-30
UC endo
continuous
rectum but stays within colon
Crohn’s disease endo
skip lesions
anywhere in GI tract
UC bx
superficial inflammation
crypt abscesses
UC pt
bloody diarrhea
UC ca
increase risk of CRC
screening colonoscopy @8y q1y
UC extra
PSC, pANCA
UC surgery
colectomy is curative
UC tx
mild: 5-ASA, mesalamine
mod: 6-MP, AZA …. MTX
severe: surgical resection
flares: none
UC vs. Crohn’s: diarrhea
UC: bloody diarrhea that should have the colon cut out as cure
Crohn’s: watery diarrhea that can’t have surgery unless there is a fistula
UC vs. Crohn’s: predominating feature
UC: bloody diarrhea and pain predominates
Crohn’s: weight loss and malabsorption predominate
UC vs. Crohn’s: cancer
UC: cancer and needs surveillance, colectomy
Crohn’s: no cancer and does not need surveillance or colectomy
UC vs. Crohn’s: treatment
UC: surgery over DMARDs and biologics
Crohn’s: DMARDs and biologics win the day