A disease of horses and mules, dogs, cattle, and cats (rarely of humans) caused by the fungus Pythium insidiosum (Hyphomyces destruens); most common in tropic or subtropic environmens, characterized by granulomatous and necrotic lesions that appear on the head and lower legs, ulcerate, and enlarge by subcutaneous extension. Also causes gastrointestinal tract granulomas, particularly in dogs. Rarely, ophthalmic, nasopharyngeal, or disseminated forms occur in animals. Risk of infection increases with exposure to swampy, warm environments.
hyphomycosis/hy·pho·my·co·sis/ (-mi-ko´sis) see hyalohyphomycosis and phaeohyphomycosis.
any infection caused by an imperfect fungus of the form-class Hyphomycetes. The group has been divided into hyalohyphomycosis and phaeohyphomycosis on the basis of the color of the mycelium and wall of the fungus. It is a disease of horses and mules, rarely of humans.
1. infection with fungi of the genus Hyphomyces.
2. infection with hyphomycetes (imperfect fungi).
A skin disease of horses and mules caused by infection with Hyphomyces destruens. It is marked by the formation of subcutaneous abscesses which ulcerate leaving large, raw surfaces. See also swamp cancer. Called also oomycosis.