GI Radiology 2
Terms
undefined, object
copy deck
- abdominal imaging modalities
- plain, UGI, SBFT, BE, US, CT, MRI, NM
- what can you see on Plain Film
-
bowel obstruction
Gallstones (85% are missed)
Renal stones (most show up)
pancreatic calcifications
vascular calcifications
appendicolith
pneumoperitoneum - most common cause of bowel obstruction
-
adhesions
also hernia, tumor or volvulus - best imaging for bowel obstruction
- CT, SBFT, plain films
- best imaging for gallstones
- abdominal u/s
- evaluate painful hemauturia
-
kidney stones
CT is best modality - most common cause of pancreatic calcifications
- EtOH
- response to pneumoperitoneum
- surgical emergency- don't wait for radiologist
- best imaging for appendicitis
- CT can make deffinitive dx
- UGI will show...
-
Ulcer, mass, infection
Anatomy
r/o perforation - single contrast
- barium only
- double contrast
- barium + air (fizzy gas)
- esophageal dz seen on UGI
-
herpes- ulcers & edema
candida- nodular
GERD-
Tumors - thickened folds, ulcerations, poor peristalsis on UGI
- GERD
- ulcers & edema on UGI
- herpes
- nodular area on UGI
- candida
- types of esophageal tumors
-
90% squamous cell carcinoma
10% adenocarcinoma
typically don't present until very advanced - stomach dz seen on UGI
- hiatal hernia, gastritis, ulcer, tumor
- conditions seen with SBFT
- obstruction, tumor, inflammation, Crohn's
- appearance of SI on SBFT
-
Duodenum= curve
Jejunum= folds
Ileum = non-specific - strictures on SBFT & hx of GI distress, worsening diarrhea (oily, stinky), wt loss
- Crohn's dz
- conditions seen w/barium enema
-
good for small polyps
apple core lesion
ulcerative colitis - constipation & pencil thin feces
- "apple core lesion"
- fever, WBC elevated, LLQ pain
- diverticulitis
- conditions seen on abdominal u/s
-
differentiate RUQ pain
preferred for female pelvic pain (& ectopic)
suspected abdominal aortic aneurysm - RUQ differential
-
Gallbladder dz- Biliary obstruction
Liver dz- w/ Hep C (CT/MRI better),
Pancreatic dz
ascites -
obese, female, DM
"mobile echogenic focus w/posterior acoustical shadowing" - gallbladder dz
- uses for abdominal CT
- preferred for tumor, acute abdomen, trauma, appendicitis