A 20-year-old woman from Côte d'Ivoire presents with a 1-year history of gradually enlarging, painless cervical lymphadenopathy. She is HIV-negative. ...

Question

A 20-year-old woman from Côte d'Ivoire presents with a 1-year history of gradually enlarging, painless cervical lymphadenopathy. She is HIV-negative. FNA shows non-caseating granulomata with scattered AFB on ZN stain. Culture on Löwenstein-Jensen medium at 37°C is negative at 8 weeks. The FNA material grows at 30°C on LJ medium after 6 weeks. What organism should be considered?

Accepted Answer

Non-tuberculous mycobacterium requiring lower incubation temperature - consider M. ulcerans or M. marinum

Answer

Mycobacterium tuberculosis

Answer

Mycobacterium ulcerans

Answer

Mycobacterium avium complex

Answer

Mycobacterium marinum

uk-dtmh MCQ (SBA): Temperature-dependent Mycobacterial Growth