The differential diagnosis of renal tuberculosis and lithiasis is, at present, in the great majority of cases easily accomplished by the trained urologist. The positive evidence obtained from a good roentgenogram establishes at once the diagnosis of calculus, and if in a cachectic individual with suspicious lung-symptoms a protracted and distressing pyuria exists, the diagnosis of renal tuberculosis can be ventured, though tubercle bacilli may not be traceable in the bladder-urine. Thus a correct recognition of both pathologic conditions is, in many instances, feasible by the general practitioner who has taken the pains to familiarize himself with the routine technic of modern urologic diagnostic methods.
Roentgenography is at present justly recognized as the most important means of diagnosing renal calculus, and a satisfactory kidney-plate demonstrating one or more characteristic calculus shadows is now, especially since the more general use of the compression diaphragm, feasible even at the hands of the
KROTOSZYNER M. DIFFERENTIAL DIAGNOSIS OF NEPHROLITHIASIS AND RENAL TUBERCULOSIS BY ROENTGENOGRAPHY. JAMA. 1914;LXIII(23):2006–2009. doi:10.1001/jama.1914.02570230016005
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