Hepatic abscesses in five outdoor-housed rhesus macaques (Macaca mulatta)

Hepatic abscesses are uncommon in non-human primates and usually occur as multifocal microabscesses originating from bacteremia. Necropsy, histopathology, and bacterial cultures were performed on five subadult to adult female rhesus macaques (Macaca mulatta) that died spontaneously. Necropsy findings included cavitating abscesses in the right central liver lobe of all five animals, with intralesional plant material in four animals. This is the first report of cavitating hepatic abscesses with intralesional plant material in non-human primates.