Apple core sign (colon)

Changed by Ayla Al Kabbani, 15 Nov 2019

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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 ³:

lymphoma with colonic involvement - appears more diffuse
Crohn disease
chronic ulcerative colitis
ischaemic colitis
chlamydia infection
colonic tuberculosis
helminthoma
colonic amoebiasis
colonic cytomegalovirus
villous adenoma
radiosurgery e.g. high dose CyberKnife used for treating unresectable abdominal malignancies

Image 3 Diagram ( update )

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Figure 2: apple-core lesion ~~- 1~~

Image 4 Diagram ( update )

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Figure 32: apple-core lesion ~~- 2~~

Image 5 Pathology (Gross pathology) ( update )

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Figure 43: gross pathology - colorectal cancer

Updates to Synonym Attributes

Title was changed:

Apple ~~core~~-core sign

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