Thoracic hydatid echinococcosis; diagnosis and treatment.

Hm~~rn E C H M O ~ S I S IS PRODUCED and bronchial tubes, etc. Pvogenic infecby the larval or hydatid state of the tions, tuberculosis and neoplasms may deechinococcus granul0sis.t It corresponds to velop on the walls of the cavities containan intermediate phase of the parasite that ing hydatids or in the neighboring tissues. in its adult stage inhabits the intestine of ~ h ~ ~ ~ ~ i ~ e c h i n o c o c c o ~ through hydadogs. The egg of the echinococcus grandlids arising from abdominal viscera. Heosus enters into the child through the patic echinococcosis, as well as splenic and mouth. The embryo, contained in the egg, renal, may spread and involve the diapenetrates the intestinal wall and enters the phragm and enter into the thoracic cavity. blood *am and subsequently l o d ~ in This penetration produces different paththe liver, lungs or other viscera. The emdogic situations: pleural, pleuro-pulmobryo transforms itself into a larva: hydatid, nary, pericardial, hepato-pleural fistulae, characterized by a membrane and fluid hepato-bronchial fistulae, etc. In hepatomatter. The fer+iW of the hydatid is a bronchial fistula: expectoration of bile is result of the presence of scolices capable of observed, producing secondary echinococosis. Hydatids produce in some organs, such as the TOPOGRAPHY