In 1966 Bigler described a method for extraction of impacted foreign bodies with the use of a Foley catheter [1]. Using this method several investigators have reported a success rate of up to 95% [2,3]. We wish to report a patient group in which catheter extraction of esophageal foreign bodies was less successful, and a radiographic sign which appears to be predictive of an unsuccessful foreign body removal.
Material and methodsOver a 5 year period, fifty-eight children presented to the Radiology Department of Children's Hospital Medical Center, Cincinnati with esophageal foreign bodies. 3-he radiographs and medical records were retrospectively reviewed for the sex, age at presentation, type and location of the foreign body, and for the success rate of removal using the Foley catheter extraction technique.Chest radiographs in anteroposterior position were available for review in all patients. Lateral radiographs were not routinely obtained but were available for review in all children with difficult or failed balloon extraction and in a majority of children whose foreign bodies were successfully removed.Our technique for esophageal foreign body removal is similar to that presented by other authors [2,[4][5][6], and therefore will only be briefly described. Smooth, radiopaque objects are considered for removal regardless of how 10ng they have been in place as long as no contraindication is present, Contra-indication to balloon extraction included signs of esophageal perforation, widened mediastinum on chest radiograph, or a bleeding diathesis. Prior to removal, a resuscitation cart is brought into the room, opened, and prepared for potential use. The nasal route is preferred and prior to catheter insertion, the nose may be anesthetized with local anesthetic. A 12 French Foley catheter with a 5 cc balloon is usually selected. Younger children are placed on an octagon board (Enterprises Octostop, Montreal, Canada), while older children are "mummy wrapped" in sheets when necessary. The balloon is tested and under fluoroscopic guidance positioned distal to the foreign body. With the child in the RPO position and the table in Trendelenburg, the balloon is inflated so that it fills the esophageal lumen. The inflated balloon is slowly withdrawn and the foreign body pulled into the mouth. If the coin is not immediately * Current address: Department of Radiology, Children's Hospital of Michigan, Detroit, Michigan, USA spit out, a bite block is positioned between the molar teeth and a finger is inserted to remove the foreign body.
ResultsOver a five year period, fifty-eight children (36 males and 22 females) with esophageal foreign bodies were examined. The patients ranged in age from 7 to 166 months, had a mean age of 44 months, and 47% were less than 24 months of age. Coins were retained in the esophagus in 48%, miscellaneous foreign bodies including safety pins, chicken bones, cardboard, thumbtacks, a jack, key and coilspring were present in 28% and food in 24%. Foreign body removal was attempted only in patients with bl...