Spontaneous cryptococcosis of a squirrel monkey (Saimiri sciureus) in French Guyana.

An old female squirrel monkey (Saimiri sciureus) with a tumor-like growth of the lower jaw died in shock after 2 months of illness. Histological studies of different tissue samples demonstrated that the pathological agent was Cryptococcus. Multiple foci of fungus existed in the thoracic cavity with essentially pulmonary and glandular localizations.