First documented case of feline cystic echinococcosis in the Aysén region, Chile.

This case report describes the first documented case of cystic echinococcosis (CE) in a domestic cat in the western side of the southern Andes, known as northern Patagonia in Chile, highlighting the epidemiological relevance of Echinococcus granulosus across non-traditional hosts. CE is notably prevalent in the Aysén region, posing a significant public health challenge. The patient, a seven-year-old domestic cat, was diagnosed with multiple abdominal cysts via ultrasound following a year of observed abdominal distension by the owners. The cysts were surgically removed, and the diagnosis confirmed through microscopy, PCR and histopathology. This occurrence adds to a limited global record, with only six other cases previously reported in Uruguay, Russia, Italy, Turkey, and Argentina. The report emphasizes the importance of ongoing public health education and strategic control measures within the region.