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Coccidioidomycoses

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organism coccidioidis imitis
endemic in Southwest U.S. (Texas, California, AKA San Joaquin Valley fever)
second most frequently seen systemic mycosis in US  (#1 = cryptococcus)
60% of  cases = asymptomatic and self-limited respiratory tract infection; skin test (+)
primary cutaneous inoculation rare (usually lab workers)
disseminate to skin lesions include acneiform and molluscum-like papules
tissue phase (37º) spherule

 

 

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