[Mycobacterium malmoense cutaneous infection in an immunocompetent patient].

Background: Mycobacterium malmoense is a mycobacterium rarely described as a human pathogen. We report the first case of cutaneous infection in an immunocompetent patient.

Case Report: A 75-year-old woman presented with a cutaneous nodula on the back of her left hand.

[Antibacterian activity modifications of serum isoniazid when using it with rifampicin (author's transl)].

When dosing isoniazid in patients' serum after ingestion, the authors find a difference in the isoniazid levels when isoniazid is used alone, then, when isoniazid is used simultaneously with rifampicin. The level decreases or increases according to the inactivation index. They analyse the therapeutic consequences which can result from it.