. Journal of radiology . 54 THE JOURNAL OF RADIOLOGY. THE RADIOGRAPHIC DIFFERENTIATION OFURETERAL OBSTRUCTION FROM CER-TAIN INTRAABDOMINAL LESIONS O. S. Fowler, M. D.Denver I became interested twelve years ago in the subject ofintermittent hydronephrosis, this being described as a kid-ney that had become a large hydronephrotic sac, whichwould fill and empty at irregular intervals, if associatedwith temperature and perhaps chills it was then called apyo-hydro-nephrosis; its etiology was usually obscure;however, about this time attention was called to certainaberrant blood vessels to lower pole

. Journal of radiology . 54 THE JOURNAL OF RADIOLOGY. THE RADIOGRAPHIC DIFFERENTIATION OFURETERAL OBSTRUCTION FROM CER-TAIN INTRAABDOMINAL LESIONS O. S. Fowler, M. D.Denver I became interested twelve years ago in the subject ofintermittent hydronephrosis, this being described as a kid-ney that had become a large hydronephrotic sac, whichwould fill and empty at irregular intervals, if associatedwith temperature and perhaps chills it was then called apyo-hydro-nephrosis; its etiology was usually obscure;however, about this time attention was called to certainaberrant blood vessels to lower pole

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. Journal of radiology . 54 THE JOURNAL OF RADIOLOGY. THE RADIOGRAPHIC DIFFERENTIATION OFURETERAL OBSTRUCTION FROM CER-TAIN INTRAABDOMINAL LESIONS O. S. Fowler, M. D.Denver I became interested twelve years ago in the subject ofintermittent hydronephrosis, this being described as a kid-ney that had become a large hydronephrotic sac, whichwould fill and empty at irregular intervals, if associatedwith temperature and perhaps chills it was then called apyo-hydro-nephrosis; its etiology was usually obscure;however, about this time attention was called to certainaberrant blood vessels to lower pole of kidney that usuallycrossed the ureteral pelvic juncture and by its pressureupon the ureter would produce retention of the urine in thekidney and the back pressure from this retention and fromthe secretion of the oncoming watery urine would producea dilation of the kidney pelvis and perhaps of the kidneyitself with finally destruction of the parenchyma of thegland,, which always necessitated a nephrectomy. It wasmy hope that a method might be foun