. Radiography and radio-therapeutics . ILATl*; LXX\. — Calculi and Gallstones. rt, Small calculus in lilaiMci. Plileltolitlis on riylit ami Iclt .sides of i)elvis. b. Gallstones in gall bladdci-. Ilate on anterior aspect of abdomen. c, Two gallstones ; note position below the kidney shadow. (Radiograph by C. Thurstan Holland.) DISEASES OF THE URINARY TRACT 373. diseases in order, it is necessary to consider some of the conditions which, when met with, are apt to mislead the observer and cause errors of diagnosis. Those are numerous and ever increasing in number as fresh cases are reco
. Radiography and radio-therapeutics . ILATl*; LXX\. — Calculi and Gallstones. rt, Small calculus in lilaiMci. Plileltolitlis on riylit ami Iclt .sides of i)elvis. b. Gallstones in gall bladdci-. Ilate on anterior aspect of abdomen. c, Two gallstones ; note position below the kidney shadow. (Radiograph by C. Thurstan Holland.) DISEASES OF THE URINARY TRACT 373. diseases in order, it is necessary to consider some of the conditions which, when met with, are apt to mislead the observer and cause errors of diagnosis. Those are numerous and ever increasing in number as fresh cases are recorded.(1) Faecal matter in the intestines. This is a common cause of mistake in diagnosis, but if the necessary prepara-tory measures recommended are carefully carried out this cause should never occur. Plate LXXIV., Fig. c, illustrates an instance of this kind, where a large shadow is seen in the pelvis of the kidney, which might easily have been diagnosed as a large stone. A second radiograph, taken two days later afterfree purgation, showsthe mass lower downin the colon. Thepoint which led to adiagnosis of faecalmatter was the loadedcondition of the colonover the oppositekidney region. (2) Foreign bodiesin the intestine maybe mistaken for cal-culus. (3) Enlarged andcalcified mesentericglands are anotherelement leading to urinary Fig. 316.—Multiple shadows iu
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