Factors in the Pathogenesis of Pyelonephritis

While it is almost literally true that a satisfactory comprehension of the diseases of the genitourinary tract depends upon a clear appreciation of the nature and probable course of renal infection, there is no subject in which there is so little uniformity of opinion and so much confusion. The literature of the subject is stupefying both in quantity and in complexity, and anyone who has attempted to master it will, we think, be convinced of the fact that it is more likely to confound than to enlighten the reader.'8