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Answer: c. The surface color of Paecilomyces species recovered in culture can be variable; however, the color is never blue-green, as seen with Penicillium species.
Answer: d. Paecilomyces species have been associated with endocarditis, catheter-related fungemia, and skin infections but not cholangitis. The genus has also been reported to cause nephritis, pulmonary infections, ocular infections, and subcutaneous infections.
Answer: b. Although in vitro susceptibility results have yet to be correlated with in vivo responses, posaconazole is the only antifungal to show good in vitro activity against all of the species tested. Because of the lack of correlation between in vitro results and in vivo responses, the clinical utility of susceptibility testing is uncertain.