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Stomach

Normal gross anatomy


Reviewers: Elliot Weisenberg, M.D. (see Reviewers page)
Revised: 25 July 2012, last major update July 2012
Copyright: (c) 2003-2012, PathologyOutlines.com, Inc.

General
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● Normal volume is 1.5 liters, capacity is 3 liters, potentially more
● Fine mosaic-like pattern of mucosa because of punctuations by gastric pits or foveolae
● Longitudinal infoldings of mucosa and submucosa known as rugae are coarser proximally and when stomach is empty

Cardia:
● Narrow conical portion distal to gastroesophageal junction
● Many authors claim that cardiac mucosa is reflux-associated epithelia and not normally present
● Of note in the AJCC Cancer Staging Manual, 7th Edition (2010), carcinomas of the esophagus and esophagogastric junction (the proximal 5 cm of the stomach) are staged identically

Fundus:
● Dome shaped proximal stomach

Body/corpus:
● Remainder of stomach to incisura angularis

Incisura angularis:
● Where stomach narrows before it joins duodenum

Antrum:
● Incisura angularis to pyloric sphincter (3-4 cm)

Pylorus:
● Muscular ring that controls flow of food content into proximal duodenum

Lesser curvature:
● Medial curvature of stomach on the right

Greater curvature:
● Lateral curvature of stomach

Gross images
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Normal appearance of the stomach, opened along the greater curvature


Normal appearance of the gastric antrum extending to the pylorus at the right of center

Additional references
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AJCC Cancer Staging Manual, 7th Edition (2009): Springer

End of Stomach > Normal gross anatomy


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