The organism Penicillium marneffei is described as having which disease progression?

• A. From disseminated infection to mucocutaneous infection
• B. Only mucocutaneous infection occurs
• C. From mucocutaneous infection to disseminated infection
• D. Only disseminated infection occurs

Answer: (C)

Penicillium marneffei (Talaromyces marneffei) infection tends to follow a pattern where mucocutaneous lesions appear first as a localized mucosal or skin involvement, and in individuals with weakened immune defenses, the fungus then spreads hematogenously to cause disseminated disease affecting organs like the liver, spleen, bone marrow, and additional skin sites. This progression—from a mucocutaneous focus to systemic spread—is why the best description is that the infection moves from mucocutaneous involvement to disseminated disease. The other patterns don’t fit the typical course: the infection is not restricted to mucocutaneous sites only, dissemination can occur, and the reverse sequence isn’t the usual pattern for this pathogen.