Nattawan PalavutitotaiPiriyaporn ChongtrakoolPopchai NgamskulrungrojMethee ChayakulkeereeMahidol University2018-11-232018-11-232015-01-01Southeast Asian Journal of Tropical Medicine and Public Health. Vol.46, No.6 (2015), 1049-1054012515622-s2.0-84979862613https://repository.li.mahidol.ac.th/handle/20.500.14594/36664© 2015, SEAMEO TROPMED Network. All rights reserved. We describe the first case of a psoas muscle abscess caused by Nocardia beijingensis and subcutaneous phaeohyphomycosis caused by Phaeoacremonium parasiticum in a renal transplant recipient. The patient was treated for nocardiosis with percutaneous drainage and intravenous trimethoprim/sulfamethoxazole (TMP/SMX) combined with imipenem for 2 weeks, followed by a 4-week course of intravenous TMP/SMX and then oral TMP/SMX. During hospitalization for the psoas muscle abscess the patient developed cellulitis with subcutaneous nodules of his right leg. Skin biopsy and cultures revealed a dematiaceous mold, subsequently identified as P. parasiticum by DNA sequencing. The subcutaneous phaeohyphomycosis was treated with surgical drainage and liposomal amphotericin B for 4 weeks followed by a combination of itraconazole and terbinafine. The patient gradually improved and was discharged home after 18 weeks of hospitalization.Mahidol UniversityMedicineArticleSCOPUS