[1st case of human hepatic hydatidosis in Costa Rica]

About seven cases of unilocular hydatidosis for Echinococcus granulosus in porcine and bovine cattles have been found in Costa Rica. According to one out of the authors--Brenes, R. R.--the experimental infection of a dog (1950) after the oral administration of a fertile cyst for obtaining or developing the adult form failed to produce good results. Up to date, no report of the finding of E. granulosus in dogs or in people has been obtained. No additional case of bovine hydatidosis has been reported in Costa Rica in the last twenty years. A patient with hepatic hydatidosis who underwent surgery is presented.