[Microsporum gypseum: endothrix parasitism with medium or large spores in hair of children].

Five cases of tinea corporis in children by Microsporum gypseum are presented. In four of them an endothrix type of parasitism with arthrospores 4 to 8 microns in diameter was observed. In the other case ectothrix and endothrix types of parasitism were seen in different hairs. Endothrix infection of hairs by species of the genus Microsporum has not been clearly demonstrated until the present. Three isolates were identified as Nannazzia gypsea of the "+" mating type.