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Int J Tuberc Lung Dis. 2011 Jun;15(6):811-7. doi: 10.5588/ijtld.10.0481.

Characteristics of skin and soft tissue infection caused by non-tuberculous mycobacteria in Taiwan.

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  • 1Department of Pathology, National Taiwan University Hospital, National Taiwan University College of Medicine, Taipei, Taiwan.

Abstract

SETTING:

A medical centre in Taipei, Taiwan.

OBJECTIVE:

To investigate the clinicopathological and microbiological correlates of skin and soft tissue infection (SSTI) due to non-tuberculous mycobacteria (NTM).

DESIGN:

Patients with NTM SSTI identified from 1999 to 2009 were included. Histological sections of the skin biopsy specimens from these patients were reassessed.

RESULTS:

Among 58 patients with NTM SSTI, the most commonly isolated NTM were rapidly growing mycobacteria (RGM; n = 30), Mycobacterium marinum (n = 17) and M. avium complex (MAC) (n = 4). Twenty-nine (50%) of the NTM SSTI involved deep soft tissue; these progressed to local tenosynovitis in 20 patients. All of the cutaneous lesions infected with M. marinum occurred on the upper extremities; in 9 patients the skin eruptions developed after injury in an aquatic environment. Skin lesions with RGM infection usually occurred on the lower extremities, and in 6 patients the infection developed from wounds caused by medical procedures. Granulomatous inflammation with fibrinoid necrosis was present in 47% of lesions in patients with M. marinum infection and suppurative granulomatous inflammation was noted in 45% of patients with RGM infection.

CONCLUSIONS:

Identification of a close clinicopathological correlate is useful for dermatologists and pathologists in the early diagnosis and treatment of NTM SSTI.

PMID:
21575304
[PubMed - indexed for MEDLINE]
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