Pyelography (pyelo-ureterography) a study of the normal and pathologic anatomy of the renal pelvis and ureter . Fig. 176.—Renal stone (pyelogram of Fig. 175). exact, so that on comparing the position of the originalshadow in the radiogram with that in the pyelogram we mayfind it very difficult to decide in which calyx the stone islocated. With equal dilatation of all calyces, the stone isusually in the true pelvis; when one calyx is considerablylarger than the others, it is apt to contain the stone. Astone in the calyx will cause dilatation of the calyx either as 204 PYELOGRAPHY a result of se
Pyelography (pyelo-ureterography) a study of the normal and pathologic anatomy of the renal pelvis and ureter . Fig. 176.—Renal stone (pyelogram of Fig. 175). exact, so that on comparing the position of the originalshadow in the radiogram with that in the pyelogram we mayfind it very difficult to decide in which calyx the stone islocated. With equal dilatation of all calyces, the stone isusually in the true pelvis; when one calyx is considerablylarger than the others, it is apt to contain the stone. Astone in the calyx will cause dilatation of the calyx either as 204 PYELOGRAPHY a result of secondary infection or mechanical a rule, the inflammatory changes are more prominentthan the mechanical, although evidence of both may be ap-parent. A stone situated in a calyx the base of which isbroad and open to the lumen of the true pelvis should beconsidered as a pelvic stone. When the isthmus is so nar-row that a stone in the calyx could not be removed through. Fig. 177.—Shadow in the right renal area. the pelvis, the stone should not be described as in the may sometimes be difficult to determine whether a stonewhich apparently lies in the calyx can be removed throughthe pelvis or whether nephrotomy is necessary. The same principles governing the visibility of stone inthe injected pelvis will determine whether the stone can beseen in the outhne of the calyx. In Fig. 177 a double stone RENAL STONE 205
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectkidneys, bookyear1915
