Coughlin G P, Gallery R, Hamilton D W, Grant A K
Med J Aust. 1977 Sep 10;2(11):367. doi: 10.5694/j.1326-5377.1977.tb117706.x.
Foreign bodies may become impacted because of congenital or acquired narrowing of the gastrointestinal tract or owing to unusual physical characteristics of the ingested material. Active intervention is necessary when impaction is complicated by intestinal obstruction or perforation or when the foreign body is composed of a toxic substance.
