RESUMEN
1) A group of 347 children were observed for ascariasis in the Childrens Department of the North General Hospital2) Expulsion of ascaris and recurrent abdominal pain were the most common complaints on admission3) Children under four years comprised the most infested group. Sex had no bearing on the incidence of ascariasis4) Twelve patients presenting manifestations of acute abdomen were studied. All were over five years of age. Only one was operated on, but he was given hexylresorcinol treatment postoperatively. The other eleven cases were treated conservatively, and they were given hexylresorcinol therapy5) Of the 331 cases treated, 75.8% expelled ascaris, and, in most of them, this occurred 24 hours after administration of the crystoids. Most of them expelled less than ten ascaris immediately after therapy; but thirteen passed countless ascaris, and seven passed balls of worms6) Only 6 cases showed some untoward effects, of which first-degree burns of the buccal nucosa was the most common. All these, however, were very mild and transient. (Summary)