Apple core sign (colon)
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The apple core sign, also known as the napkin ring sign (bowel), is most frequently associated with constriction of the lumen of the colon by a stenosing annular colorectal carcinoma.
Differential diagnosis
The appearance of the apple-core lesion of the colon also can be caused by other diseases :
- lymphoma with colonic involvement - appears more diffuse
- Crohn disease
- chronic ulcerative colitis
- ischemic colitis
- chlamydia infection
- colonic tuberculosis
- helminthoma
- colonic amoebiasis
- colonic cytomegalovirus
- villous adenoma
- radiosurgery e.g. high dose CyberKnife used for treating unresectable abdominal malignancies
See also
Siehe auch:
und weiter:
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