Details

Fig. 2.33 Variable shape of the gastric body. The shape of the body lumen depends on its degree of distension by air insufflation a Slightly distended b Moderately distended ik ►

The following details should be observed and evaluated in the gastric body.

Shape

The body appears as a funnel-shaped cavity that tapers down to a constriction at the angulus. Before air is insufflated, it is in a collapsed state (Fig. 2.33). Surface

Inspection in the collapsed state shows a seemingly random pattern of tortuous mucosal folds on the greater curvature side. When air is added, the folds straighten out and may be effaced when the lumen is maximally distended. Smaller folds run along the lesser curvature and along the anterior and posterior walls into the deeper part of the stomach (Fig. 2.34).

c Strongly distended

Topography

When the endoscope is normally positioned in the gastric body (Fig. 2.26), the lesser curvature is located approximately between the 9- and the 12-o'clock positions, opposite the greater curvature. The anterior wall is on the left, the posterior wall on the right. Mucosa

The gastric mucosa is variable in color, usually appearing reddish-orange. The polygon-shaped areae ga-stricae are frequently observed. Few if any blood vessels are seen, but networks of vessels may be visible through mucosa that is atrophic.

Fig. 2.34 Surface structure of the gastric body a Distant view. Notice the tortuous rural folds of the gastric body

Fig. 2.34 Surface structure of the gastric body a Distant view. Notice the tortuous rural folds of the gastric body

b Closer view c Close-up view. The areae gastricae can be seen b Closer view c Close-up view. The areae gastricae can be seen

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