Pyelography (pyelo-ureterography) a study of the normal and pathologic anatomy of the renal pelvis and ureter . Fig. 158.—Shadow in the right renal area. the calyces appear normal. The pelvic dilatation may becaused in part by mechanical obstruction. Mechanical Dilatation.—It would be logical to expectmechanical distention of the pelvis to result from the ob-struction caused by a stone within it. This occurs to anoticeable degree in but a small percentage of cases. Whenpresent, the distention is characterized by an increase in theoutline of the free pelvis proportionately greater than that 190
Pyelography (pyelo-ureterography) a study of the normal and pathologic anatomy of the renal pelvis and ureter . Fig. 158.—Shadow in the right renal area. the calyces appear normal. The pelvic dilatation may becaused in part by mechanical obstruction. Mechanical Dilatation.—It would be logical to expectmechanical distention of the pelvis to result from the ob-struction caused by a stone within it. This occurs to anoticeable degree in but a small percentage of cases. Whenpresent, the distention is characterized by an increase in theoutline of the free pelvis proportionately greater than that 190 PYELOGRAPHY in the calyces. Hydronephrosis accompanying stone in thepelvis is usually smaller than that found accompanyingconstriction in the upper ureter from anatomic , however, a stone situated at the uretero-pelvic juncture partially obstructing the ureter will causehydronephrosis of considerable degree. Not infrequently the pelvic outline assumes the character-. Fig. 159.—Renal stone (pyelogram of Fig. 158). istics of both mechanical and inflammatory changes, al-though the latter will usually predominate. In Fig. 160a triangular shadow is visible in the right kidney area. InFig. 161 the shadow is obscured by the outline of the di-lated pelvis. The relatively large outline of the true pelvisis the result of mechanical obstruction. The irregularity ofthe calyces, however, is the result of marked Diagnosis.—Among the causes for confusion RENAL STONE 191
Size: 1589px × 1573px
Photo credit: © The Reading Room / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1900, bookdecade1910, booksubjectkidneys, bookyear1915
