OST Module 3 Flashcards
GI Carcinoid
33% small bowel, 33% multiple, 33% malignant, 33% associated with a second malignancy.
2% of <1cm tumours metastasize, but 85% of >2cm tumours met
Hamptons line
Line crossing base of stomach ulcer, suggests benign
Most Specific sign of appendiceal perf
Periappendiceal abscess formation
Septic patient with obstructing CBD stricture, Rx
ERCP with plastic stent insertion
Best position to view lesser curve on barium meal
LAO
Phrenico-colic ligament
Separates left paracolic gutter from left subphrenic space
GI Amyloid
Increased risk from long standing RA.
Thickened folds diffusely, with dilatation.
Rigidity in the antrum.
Bowel wall appearance in bowel obstruction on CT
Wall hyperdensity due to vasodilation in early ischaemia
Regenerative nodules
Remain enhanced in portal venous phase and take up SPIO and hepatocellular agents, unlike dysplastic or HCC
Budd-chairi vs congestive cardiac disease
Narrowed hepatic veins and IVC vs dilated
Oesophageal cancer staging
T1 = Submucosa,
T2 = Muscularis propria
T3 = Adventitia
T4 = Adjacent structures.
N1 = Locoregional nodes
M1 = non-regional nodes or distant mets
Feline oesophagus Rx
Associated with mid reflux. Benign, no specific Rx needed
Polymyositis barium
Affects skeletal muscle, therefore only affects upper oesophagus
Pseudomyxoma peritonii
Retroperitoneal cystic mass with curvilinear or punctate calcifications
Transmesenteric hernia
Usually previous surgery.
Bowel loops with little capsule or omental fat, adjacent to the anterior abdominal wall
Contraindications to glucagon enema
Phaeo and Insulinoma
RCC on nuc med
Not FDG avid
Zenker diverticulum location
Posteromedial from C5/6 level
Post HCC ablation bileoma
Mural nodule in cyst appearance, usually several months after treatment
HIDA scan cholecystitis
Acute - non-visualisation at 1hr and 4hr
Chronic - Non-visualisation at 1hr, seen at 4hr
