. Radiography and radio-therapeutics . n watch for the point of stric-ture. Plates may be taken to confirm these observations. Intestinal Stasis.—Jordan adds to the knowledge of intestinal stasis. He associates ileal stasis with a distended duodenum, especially in its first part, and employs a specialtechnique to demonstrate thiscondition. The jejunum isfound to be pulled down verti-cally, forming a sharp kinkwith the fixed end of the duo-denum. He ascribes this tothe direct result of gravityupon the overloaded lowerileal coils. The obstructionproduced by the duodeno-jejmial kink is sometimes
. Radiography and radio-therapeutics . n watch for the point of stric-ture. Plates may be taken to confirm these observations. Intestinal Stasis.—Jordan adds to the knowledge of intestinal stasis. He associates ileal stasis with a distended duodenum, especially in its first part, and employs a specialtechnique to demonstrate thiscondition. The jejunum isfound to be pulled down verti-cally, forming a sharp kinkwith the fixed end of the duo-denum. He ascribes this tothe direct result of gravityupon the overloaded lowerileal coils. The obstructionproduced by the duodeno-jejmial kink is sometimes in-creased by tension of the firstfew inches of the jejunum. Hertz has never observed true stasis of the duodenum, except in cases of organic ob- iiistension structiou, and to a less extent in extreme gastroptosis, in which a kink may occur at the point where the duodenum is fixed. He is convinced that kinking plays no part Avhatever in the aetiology of duodenal ulcer ; nor does he believe that ileal kink is of any importance in the. Fig. 312.—Same case as Fig. olO, showingof colon bv eras. 366 RADIOGRAPHY causation of simple constipation. He shows that all cases of constipationfall into two groups : (1) Delay in the passage through the colon, defsecation being normal, intestinal constipation. (2) Dyschezia, in which the passage through the colon is normal, butdefaecation is inefficiently performed. Foreign Bodies in the Alimentary Canal Patients are frequently sent for the determination and subsequentlocahsation of foreign bodies in the alimentary canal. As it is impossibleto indicate in what positions they may be found, an examination of theentire tract is necessary, and the technique will be described in some foreign bodies most frequently met with are (1) coins, (2) metal toys,(3) pins, needles, safety-pins, (4) nails, (5) teeth and artificial plates, (6)hairpins, (7) enteroliths and gall-stones, (8) hair-balls. The whole alimentary tract from the pharynx dow
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