Stomach and Duodenum Flashcards
Filling and distending the stomach and duodenum. Demonstration of the distal stomach and duodenum
Single contrast technique
Small amounts of barium to coat the mucosa WITHOUT distending
Mucosal Relief Technique
Using high density barium suspensions to coat the mucosa and ingeetible effervescent granules. Demonstration of subtle features of the mucosal surface
Double contrast technique
Document abnormalities of the wall of the stomach and duodenum and to determine extent of extraluminal disease
Air contrast distention
Major muscular structure of the bowel wall
Muscularis propria (IC-OL)
Major role in host immune defense
MALT
Refers to the region of the gastroesophageal junction
Cardia
Portion of the stomach above GEJ
Fundus
Central 2/3rds from cardia to incisura
Body
Acute angle formed on the lesser curvature that marks the boundary between body and antrum
Incisura angularis
Produces
HCl
Pepsin precursors
Located in the
Parietal cell
Chief cells
Fundus and body (proximal 2/3)
Produces
Gastrin producing cells located in the
Antrum (distal 1/3)
Junction of the stomach with the duodenum
Pylorus
Pyramidal first portion of the duodenum
Duodenal bulb or cap
Lateral to the head of the pancreas
2nd portion/descending
Portion where the CBD and pancreatic duct pierce
Descending/2nd portion (ampulla of vater)
Passes to the left between the SMV and IVC and aorta
3rd/horizontal
Ascends on the left side of the aorta to the level of ___ and ____
4th portion/ascending
L2 and ligament of Treitz
Detailed pattern of the gastric mucosa as demonstrated by double contrast technique
Areae gastricae
Gastric mucosal folds that produce distinct radiolucent ridges when the stomach is partially distended
Rugae
Rugal folds are most prominent in the
Absent in the
Fundus and proximal body
Antrum
Gastric wall thickness
Antrum
Body
Duodenum
Antrum-5-7mm
Body-2-3mm
Duodenum-<3mm
Highest part of the fourth part of the duodenum
Ligamrnt of Treitz
