Case 175. 

The splenic lesion from the same patient, obtained by necropsy
　 　 　 　
　 Grocott's silver demonstrates formation of short myceliform fungi within the cytoplasm of macrophages. 　
　 　 　 　

　

 　 Rarely, short mycelial form fungi can be seen in the internal organs. P. marneffei is the only one Penicillium species to cause deep mycosis in immunocompromised individuals such as AIDS patients, and is endemic in southeastern Asia, particularly in Thailand.