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Colon non tumor
Non-neoplastic, non-congenital lesions
Melanosis coli

Reviewer: Raul S. Gonzalez, M.D. (see Reviewers page)
Revised: 16 November 2013, last major update October 2013
Copyright: (c) 2003-2013, PathologyOutlines.com, Inc.
PubMed Search: Melanosis coli [title]

General
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Sites
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Etiology
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Clinical features
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Diagnosis
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Case reports
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Gross description
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Clinical images
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Lymphoid hyperplasia

Darkly pigmented colonic mucosa

Colonoscopic appearance

Colon appeared dark brown and black

Micro description
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Micro images
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Accumulation of brown melanosis pigment

Pigment-laden macrophages in colonic mucosa

Macrophages engorged with brown pigment

Colonic mucosa

Positive stains
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Negative stains
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Videos
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Differential diagnosis
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End of Colon non tumor > Non-neoplastic, non-congenital lesions > Melanosis coli


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