Extrinsic Indentation

Organs that border the stomach tend to indent the gastric wall (see p. 48 ff.). The organs themselves—and to a greater degree, mass lesions affecting these organs—can produce circumscribed, tumorlike indentations in the stomach wall (Fig. 3.92).

Fig. 3.91 Nomenclature of polypoid mucosal lesions

Slightly raised, poorly demarcated

Hemispherical, moderately well demarcated

Spherical with indrawn base

Pedunculated

Slightly raised, poorly demarcated

Hemispherical, moderately well demarcated

Spherical with indrawn base

Pedunculated

Endoscopic diagnostic criteria

- Intact mucosa

- Mobility of the stomach wall over the indentation

- Typical location over the anterior stomach wall

- Identified by pressing on the abdominal wall below the sternum with the finger

- Typical location

- Large indentation located opposite the cardiac impression (see p. 51)

► Liver, hepatic metastases

- Located at the site of the hepatic impression in the anterior wall (see p. 50)

- Movement with respiration

- Intact mucosa

► Pancreas, pancreatic carcinoma, pancreatic pseudo-cysts

- Typical location in the posterior stomach wall at the body-antrum junction (see p. 49)

- Sausage-shaped indentation in the gastric body or body-antrum junction

- Detectable peristaltic motion

► Intraabdominal metastases

- Located over the posterior stomach wall

Differential diagnosis

► Intramural process

Checklist for endoscopic evaluation

Additional Studies

► Endosonography

Fig. 3.92 Extrinsic indentation of the stomach wall

Fig. 3.92 Extrinsic indentation of the stomach wall

Peri Urethral Cyst

Indentation of the fundus by an enlarged spleen

Indentation by an hepatic metastasis b a r

d Penetration of a pancreatic pseudocyst into the stomach

Indentation of the fundus by an enlarged spleen

Indentation by an hepatic metastasis c Pancreatic process d Penetration of a pancreatic pseudocyst into the stomach b a

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  • nadine
    What is organ extrinsic indentation into stomach?
    6 months ago

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