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USMLE Step 1 GI
DIT-Gastroenterology
87
Medical
Graduate
05/28/2010

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Cards

Term
What enzyme catalyzes the rate limiting step in carbohydrate digestion?
Definition
oligosaccharide hydrolases
Term
What enzyme is responsible for the conjugation of bilirubin?
Definition
UDP-glucuronyl transferase
Term
What do the G cells of the GI secrete?
Definition
Gastrin
Term
What do the I cells of the GI secrete?
Definition
CCK
Term
What do the S cells of the GI secrete?
Definition
secretin
Term
What do the D cells of the GI secrete?
Definition
somatostatin
Term
What do the parietal cells of the GI secrete?
Definition
Intrinsic factor
Term
What do the chief cells of the GI secrete?
Definition
Pepsin
Term
What GI ligament contains the portal triad and may be compressed to control bleeding?
Definition
hepatoduodonal
Term
What are the components of the portal triad?
Definition
1. hepatic artery
2. portal vein
3. common bile duct
Term
What GI ligament attaches the spleen to to the posterior abdominal wall?
Definition
splenorenal ligament
Term
What ligament attaches the spleen to the stomach?
Definition
gastrosplenic
Term
Which GI ligament is the derivative of the fetal umbilical vein?
Definition
falciform ligament (connects liver to anterior abdominal wall)
Term
What hormone increases pancreatic secretion? Pancreatic HCO3- secretion?
Definition
Pancreatic secretion: CCK
Pancreatic HCO3-: Secretin
Term
What 3 structures form Hesselbach's triangle?
Definition
1. Inferior epigastric A
2. Lateral border of rectus abdominus
3. Inguinal ligament
Term
Which hereditary hyperbilirubinemia? mildly decreased UDPGT
Definition
Gilbert's
Term
Which hereditary hyperbilirubinemia? Completely absent UDPGT
Definition
Crigler-Najjar Type 1
Term
Which hereditary hyperbilirubinemia? grossly black liver
Definition
Dubin-Johnson Syndrome
Term
Which hereditary hyperbilirubinemia? Responds to phenobarbital
Definition
Crigler-Nijjar Type 2
Term
Which hereditary hyperbilirubinemia? treatment includes plasmaphoresis and phototherapy
Definition
Crigler-Najjar Type 1
Term
Which hereditary hyperbilirubinemia? Asymptomatic unless under physiological stress (alcohol, infection)?
Definition
Gilbert's
Term
Which antacid? may cause diarrhea
Definition
Magnesium hydroxide
(MG- Must Go!)
Term
Which antacid? may cause constipation
Definition
Aluminum hydroxide
(AluMINIMUM amt of feces)
Term
Which antacid? may cause rebound hypercalcemia
Definition
Calcium carbonate
Term
Which side effect might all antacids cause?
Definition
hypOkalemia
Term
What is the artery of the foregut?
Definition
Celiac
Term
What is the artery of the midgut?
Definition
Superior Mesenteric
Term
What is the artery of the rectum and distal 1/3 of the colon?
Definition
Inferior Mesenteric
Term
What is the watershed region of the gut?
Definition
Splenic flexure!
Term
What is the most common location of salivary gland tumors?
Definition
parotid gland
Term
What is the most common salivary gland tumor? What is it's histological appearance?
Definition
Pleomorphic adenoma: Multiple tissue types (epithelial, mesenchymal)...benign and painless, high rate of recurrence
Term
What is the 2nd most common benign salivary tumor?
Definition
Warthin's Tumor (tissue trapped in lymph node, benign)
Term
What is the most common malignant salivary gland tumor?
Definition
Mucoepidermoid carcinoma
Term
Which is more likely to be malignant, parotid or sublingual gland tumor?
Definition
Parotid (serous) tumors are more common but less likely to be malignant; sublingual (mucinous) are less common but more likely to be malignant
Term
What is the location of a Zenker's diverticulum?
Definition
Immediately above the upper esophageal sphincter (presents w/ bad breath and dysphagia)
Term
A pt taking NSAIDs for the management of her gout develops anemia, has pain w/ eating, and has a (+) occult blood test. What drug should she be treated with?
Definition
Misiprostol (increases protective barrier, best for NSAID induced peptic ulcers)
Term
What upper GI problem? specialized columnar epithelium seen in biopsy f/ distal esophagus
Definition
Barrett's
Term
What upper GI problem? biopsy of a pt w/ esophagitis reveals large pink intranuclear inclusions and host cell chromatin that is pushed to the edge of the nucleus
Definition
Herpes esophagitis
Term
What upper GI problem? stomach biopsy reveals neutrophils above the BM, loss of surface epithelium, and fibrin-containing prulrulent exudates
Definition
Acute gastritis
Term
What upper GI problem? an esophageal biopsy reveals a lack of ganglion cells b/w the inner and outer muscular layers
Definition
Achalasia
Term
What upper GI problem? biopsy of a mass in parotid gland reveals a double layer of columnar epithelial cells resting on a dense lymphoid stroma
Definition
Warthin's tumor
Term
What upper GI problem? small intestine biopsy reveals small lymphocytes w/ irregular nuclear contours and proliferation of these lymphocytes into the mucosa and epithelial glands
Definition
MALT lymphoma
Term
What upper GI problem? out-pouching of all layers of the esophagus found just above the LES
Definition
Epiphrenic diverticulum
Term
What upper GI problem? basal cell hyperplasia, eosinophilia, and elongation of lamina propria papilla seen in biopsy of esophagus
Definition
Chronic reflux
Term
What upper GI problem? goblet cells seen in the distal esophagus
Definition
Barrett's esophagus
Term
What upper GI problem? protrusion of the mucosa in the upper esophagus
Definition
Esophageal webs
Term
What upper GI problem? biopsy of a pt w/ esophagitis reveals enlarged cells, intranuclear and cystoplasmic inclusions, and a clear perinuclear halo
Definition
CMV esophagitis
Term
What upper GI problem? diffuse thickening of gastrin folds, elevated serum gastrin levels. biopsy reveals glandular hyperplasia w/out foveolar hyperplasia
Definition
Zollinger Ellison syndrom
Term
What upper GI problem? Biopsy of mass in parotid gland shows both epithelial and mesenchymal differentiation
Definition
pleomorphic adenoma
Term
What upper GI problem? biopsy of mass in parotid gland reveals a carcinoma composed mostly mucus-secreting cells but also some squamous cells, and intermediates of both
Definition
Muco-epidermoid tumor/carcinoma
Term
What upper GI problem? a PAS stain on a biopsy obtained f/ a pt w esophagitis reveals hyphenated organisms
Definition
Candidal esophagitis
Term
What upper GI problem? esophageal pouch found in the upper esophagus
Definition
Zenker's diverticulum
Term
What are the 3 most common causes of small bowel obstruction?
Definition
"ABC"...
1. Adhesions (f/ previous surgeries, 75%)
2. Bulge/hernia
3. Cancer/tumors
Term
Prokinetic agents work by increasing what two neurotransmitters? By decreasing which one?
Definition
Increase: Ach and seratonin
Decrease: D2
Term
What does a Serum Albumin:Ascites Gradient >1.1 indicate?
Definition
Portal HTN
Term
A man presens w/ ataxia and tremors and brown pigmentation in a ring around his cornea. What is the dx and what should he be treated with?
Definition
Wilson's dz (Cu accumulation)...He should be given penicillamine
Term
Most common cause of acute RLQ pain?
Definition
Appendicitis
Term
50yo female presents w/ pruritis w/out jaundice, lab reveals (+) anti-mitochondrial antibody. Dx?
Definition
Primary Biliary Cirrhosis
Term
Most common cause of acute LLQ pain?
Definition
diverticulitis
Term
Gluten sensitivity?
Definition
Celiac's dz
Term
A pt w/ GI bleeding has buccal pigmentation. Dx?
Definition
Peutz-Jager
Term
60 yo female w/ RA and no EtOH hx presents w/ fatigue and rt abdominal pain, lab studies reveal high levels of ANA and ASMA, elevated serum IgG, and no viral serologic markers. Dx?
Definition
Autoimmune hepatitis
Term
Colonoscopy reveals very friable mucosa extending f/ the rectum to the distal transverse colon. Dx?
Definition
ulcerative colitis
Term
A small intestinal mucosa laden w/ distended macrophages in the lamina propria that are filled w/ PAS+ granules and rod-shaped bacilli seen by EM
Definition
Whipple's Dz (often seen in older men)
Term
Most common cause of acute RUQ pain?
Definition
cholecystitis
Term
Liver biopsy on a 23 yo female w/ elevated levels of LKM-1 antibodies, no EtOH hx, and no viral serologic markers reveals infiltration of the portal and periportal area w/ lymphocytes. Dx?
Definition
Autoimmune hepatitis
Term
Diarrhea, fever, and abdominal cramps following a course of antibiotics. Dx?
Definition
Pseudomembranous Colitis
Term
What is a fatal dz of unconjugated bilirubin resulting f/ a complete lack of UDPGT activity?
Definition
Crigler Najjar Type 1
Term
Radiography reveals a "string sign" in the terminal ileum. Dx?
Definition
Crohn's dz
Term
Elevated levels of serum ferritin and increased transferrin saturation. Dx?
Definition
Hemochromatosis
Term
Alpha-fetoprotein levels > 1000pg/mL. Dx?
Definition
Hepatocellular carcinoma
Term
Elevated serum copper, decreased serum ceruloplasmin, and elevated 24-hr urinary copper. Dx?
Definition
Wilson's Dz
Term
Pt w/ both liver dz and emphysema?
Definition
alpha-antitrypsin deficiency
Term
ERCP reveals alternating strictures and dilation. Dx?
Definition
Primary sclerosing cholangitis
Term
What are the risk factors for esophageal cancer?
Definition
"ABCDEFGH"... Alcohol, Barrett's, Cigarettes, Diverticuli, Esophaheal webs/esophagitis, Familial, GERD, Hot dogs (nitrosamines)
Term
What are the 4 main side effects of Carcinoid Syndrome?
Definition
"BFDR" Bronchospasm (wheezes), Flushing, Diarrhea, Rt heart murmur
Term
What drug do you give to treat hepatic encephalopathy?
Definition
Lactalose
Term
What is the classic triad of hemachromatosis?
Definition
1. Cirrhosis
2. Diabetes Mellitus
3. Hyperpigmentation
..."bronze diabetes"
Term
What GI pathology? Gastric hypertrophy w/ protein loss, parietal cell atrophy, and increased mucus cells. Rugae of stomach look like brain gyri
Definition
Menetrier's dz
Term
What GI pathology? "Beads on a string" appearance of intra- and extrahepatic bile ducts on ERCP
Definition
Primary Sclerosing Cholangitis
Term
What GI pathology? unknown cause of concentric "onion skin" bile duct fibrosis
Definition
Primary Sclerosing Cholangitis
Term
What is Charcot's triad of cholangitis?
Definition
Fever, Jaundice, and RUQ pain
Term
What are the 2 tumor markers of pancreatic cancer?
Definition
CEA and CA 19-9
Term
What is a (+) Murphy's sign and what GI pathology does it suggest?
Definition
Inspiratory arrest on deep palpation, suggests cholangitis
Term
What has more malignant potential, an adenomatous or villous adenoma?
Definition
Villous = villianous
Term
What are the 3 arteries that branch directly off of the Celiac trunk?
Definition
1. Left Gastric A
2. Splenic A
3. Common Hepatic A
Term
With which autoimmune d/o are anti-smooth muscle antibodies found?
Definition
Autoimmune hepatitis
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