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Mycobacterium malmoense in Italy

C Piersimoni¹, L Felici, V Penati

¹Department of Clinical Microbiology, General Hospital Umberto I.-Torrete, Ancona, Italy.

Tubercle and Lung Disease : the Official Journal of the International Union Against Tuberculosis and Lung Disease

|April 1, 1995

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A rare mycobacterial lymphadenitis case in a child was diagnosed due to Mycobacterium malmoense. This marks the first reported human infection by this pathogen in Italy.

Area of Science:

Medical Microbiology
Infectious Diseases
Pediatrics

Background:

Mycobacterium malmoense is an atypical mycobacterium known to cause opportunistic infections.
Lymphadenitis is a common presentation of mycobacterial infections, particularly in children.
Geographic distribution and incidence of Mycobacterium malmoense infections are not well-established.

Observation:

A 5-year-old girl presented with symptoms suggestive of lymphadenitis.
The causative agent, Mycobacterium malmoense, was identified from clinical samples.
Samples included pus and tissue fragments from surgically excised lymph nodes.

Findings:

Microbiological analysis confirmed Mycobacterium malmoense as the pathogen responsible for the lymphadenitis.

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Histopathological examination of lymph node tissue supported the diagnosis of mycobacterial infection.

The patient's clinical presentation and microbiological findings were consistent with M. malmoense infection.

Implications:

This case represents the first documented instance of human infection by Mycobacterium malmoense in Italy.
Highlights the need for increased awareness and diagnostic consideration of M. malmoense in pediatric lymphadenitis cases.
Contributes to understanding the geographic range and clinical spectrum of Mycobacterium malmoense infections.