The combination of symptomatic proximal esophageal webs and iron-deficiency anemia in middle-aged women constitutes
Plummer-Vinson or Paterson-Kelly syndrome
When the lumen diameter is <13 mm, distal rings are usually associated with episodic solid food dysphagia and are called
Schatzki rings
the obstruction is a stenotic cricopharyngeus muscle (upper esophageal sphincter), and the hypopharyngeal herniation most commonly occurs in an area of natural weakness proximal to the cricopharyngeus known Killianās triangle
Zenkerās diverticula
the esophagus is compressed by an aberrant right subclavian artery arising from the descending aorta and passing behind the esophagus
Dysphagia lusoria
The physiologic abnormality of GERD
excessive esophageal exposure to refluxed gastric fluid
False diverticula
Epiphrenic and hypopharyngeal (Zenkerās diverticula)
barium swallow x-ray of achalasia
dilated esophagus with poor emptying, an airfluid level, and tapering at the LES giving it a beak-like appearance
The only durable therapies for achalasia are
pneumatic dilation and LES myotomy
POEM peroral endoscopic myomectomy- endoscopic approach to LES myomectomy
Three dominant mechanisms of esophagogastric junction incompetence are recognized:
(1) transient LES relaxations, (2) LES hypotension, or
(3) anatomic distortion of the esophagogastric junction inclusive of hiatal hernia
the endoscopic hallmark of GERD
Erosive esophagitis at the esophagogastric junction
most severe histologic consequence of GERD is
Barrettās metaplasia
salmon-colored mucosa extending proximally from the gastroesophageal junction or histopathologically by the finding of specialized columnar metaplasia, is associated with a significantly increased risk for development of esophageal adenocarcinoma
Barrettās metaplasia
Specific chronic disorders have been shown to have a strong association with PUD:
(1) advanced age, (2) chronic pulmonary disease, (3) chronic renal failure, (4) cirrhosis, (5) nephrolithiasis, (6) a1 antitrypsin deficiency, (7) systemic mastocytosis
Disorders with a possible association to PUD are
(1) hyperparathyroidism, (2) coronary artery disease, (3) polycythemia vera, (4) chronic pancreatitis, (5) former alcohol use, (6) obesity, (7) African-American race, and (8) three or more doctor visits in a year
H pylori treatment
+ PCN allergy -MCL exposure
Clarithromycin triple with metronidazole (PCM)
Bismuth quadruple (PBTM)
H pylori treatment
+ PCN allergy + MCL exposure d
Bismuth quadruple
Several nonselective NSAIDs that are associated with a lower likelihood of GI and CV toxicity include
naproxen and ibuprofen
When should H. pylori eradication should be documented?
4 weeks after completing antibiotics.
test of choice for documenting eradication: stool antigen test or a urea breath test (UBT)
* off PPI for 7 days
Refractory PUDs
A GU that fails to heal after 12 weeks
DU after 8 weeks
Chronic gastritis is also classified according to the predominant site of involvement.
Type A
Type B
Type A- body-predominant form (autoimmune),
Type B- antral-predominant form (H. pyloriārelated
highly sensitive and specific marker for detecting intestinal inflammation
Fecal lactoferrin
levels correlate well with histologic inflammation, predict relapses, and detect pouchitis
Fecal calprotectin
Serology in CD and UC
CD- ASCA
UC- pANCA
Gut flora in IBS
decreased proportions of the genera Bifidobacterium and Faecalibacterium
and increased abundance of family Enterobacteriaceae, Lactobacillaceae, and Bacteroides