Pyrenochaeta romeroi: a causative agent of phaeohyphomycotic cyst.

A subcutaneous phaeohyphomycotic cyst caused by Pyrenochaeta romeroi in a 47-year-old Indian female is described. The organism was isolated repeatedly from the aspirated material from the cyst. It was identified by colony and microscopic characteristics, and sequencing of internal transcribed spacer regions of the rDNA.