sera from ninety one patients clinically suspected to extra intestinal amoebiasis (ex-am) were collected and examined for presence of anti entamoeba histolytica (e.h) antibody. the tests were indirect immunofluorescence antibody, (ifa or iif), gel diffusion (gd) and counter immuno electrophoresis (ciep). thirty one patients (34%) had anti e.h. antibody titres of >1:80. among them eight patients...

hydatid disease is a parasitic infection caused by echinococcus granulosus (larval form) in humans with lesions most frequently encountered in the liver and lungs. it can rarely involve extra-hepatic organs. it is endemic in some regions of iran. the omental hydatid cyst is a very rare manifestation of the disease. this report presents the interesting case of a very large omental hydatid cyst.