Echinococcosis/hydatidosis is a parasitic zoonosis caused in humans by the larval stage of the Echinococcus granulosus cestode. Although notification of infestation is required, there are no reliable data on the prevalence of this parasitosis among humans in Italy. This zoonosis was first reported in ancient times (Hippocrates, fourth century BC) and since then many cases of echinococcosis/hydatidosis have been described. Currently, it is considered one of the main parasitoses affecting animals bred for income and one of the most important parasitic zoonoses. We present the clinical case of a three-year-old child, living in Palermo with a dog in his house, who came to our observation for dyspnea occurring after physical exercise. Diagnosis of echinococcosis was performed on the operating table and by histological examination. The case presented is special in its manifestation from a clinical point of view, because the young patient experienced multiple injuries only to lungs, without involvement of other organs and, although the left lung cysts appeared fissured on the operating table, our patient never presented immunoallergic disorders.