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Mycobacterium marinum infection - Cellulitis DDx
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Mycobacterium marinum infection - Cellulitis DDx

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Contributors: Tara Mahar MD, Art Papier MD
Other Resources UpToDate PubMed

Synopsis

Mycobacterium marinum, the causative agent of fish tank or swimming pool granuloma, is an atypical mycobacterial skin infection often contracted, as the name suggests, from contaminated fish tanks, swimming pools, and occasionally ocean or lake water. Minor trauma is a predisposing factor. Aquarium enthusiasts are usually not aware of the risk of infection. The typical skin lesion, consisting of a pustule or nodule, develops 2–3 weeks after exposure and begins on an exposed extremity. If fever is present, it is mild. The disease is usually self-limited. Lesions tend to heal over a period of 1–2 years.

M
. marinum infection should be differentiated from cellulitis on the basis of exposure and morphology. M. marinum infection will often demonstrate papules, pustules, or ulceration.

Codes

ICD10CM:
A31.1 – Cutaneous mycobacterial infection

SNOMEDCT:
58869008 – Mycobacterium marinum

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Last Updated: 10/31/2014
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Mycobacterium marinum infection - Cellulitis DDx
See also in: Overview
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Mycobacterium marinum infection : Lymphadenopathy, Lymphangitic, Skin ulcer, Smooth nodule, Fish tank exposure
Clinical image of Mycobacterium marinum infection
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