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Mycobacterium marinum infection in Child
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Mycobacterium marinum infection in Child

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Contributors: Tara Mahar MD, Art Papier MD
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Synopsis

Mycobacterium marinum, the causative agent of fish tank or swimming pool granuloma, is an atypical mycobacterial skin infection often contracted from contaminated fish tanks, swimming pools, and, occasionally, ocean or lake water. Minor trauma is a predisposing factor. Aquarium enthusiasts and their parents are usually not aware of the risk of infection. The typical skin lesion consists of a pustule or nodule and develops on the exposed extremity 2-3 weeks after exposure. Constitutional symptoms are rare and fever, if present, is typically low-grade. The disease is usually self-limited, and lesions tend to heal over a period of 1-2 years if left untreated.

Patients with AIDS, organ transplant recipients, and patients on chronic steroids may occasionally develop disseminated infections to the skin, bone marrow, and joints, leading to synovitis and arthritis.

Codes

ICD10CM:
A31.1 – Cutaneous mycobacterial infection

SNOMEDCT:
58869008 – Mycobacterium marinum

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Diagnostic Pearls

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Differential Diagnosis & Pitfalls

Immunocompromised patients are more susceptible to the deep fungal, bacterial, and atypical mycobacterial infections listed above. Bacillary angiomatosis can be seen in human immunodeficiency (HIV) / AIDS-infected patients with low CD4 counts.

Best Tests

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Management Pearls

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Therapy

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References

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Last Updated: 07/11/2017
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Mycobacterium marinum infection in Child
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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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