Pyelography (pyelo-ureterography) a study of the normal and pathologic anatomy of the renal pelvis and ureter . utline, the mostextensive pelvic deformity will accompany sarcoma. Deformities in the outline of the renal pelvis resultingfrom neoplasm may be classified as follows: 1. Retraction of (a) one or more calyces or (6) the truepelvis. 2. Encroachment on the pelvic lumen causing (a) flat-tening of the general pelvic outline, (6) narrowing of theindividual calyces, and (c) obliteration of the true pelvis. 3. Secondary necrosis. 4. Abnormal position of the renal pelvis. 5. Deformity at the
Pyelography (pyelo-ureterography) a study of the normal and pathologic anatomy of the renal pelvis and ureter . utline, the mostextensive pelvic deformity will accompany sarcoma. Deformities in the outline of the renal pelvis resultingfrom neoplasm may be classified as follows: 1. Retraction of (a) one or more calyces or (6) the truepelvis. 2. Encroachment on the pelvic lumen causing (a) flat-tening of the general pelvic outline, (6) narrowing of theindividual calyces, and (c) obliteration of the true pelvis. 3. Secondary necrosis. 4. Abnormal position of the renal pelvis. 5. Deformity at the ureteropelvic of the Calyces.—Probably the earliest de-formity of the pelvis resulting from renal tumor is character- 252 RENAL TUMOR 253 ized by a retraction of one or more calyces. As the tumorenlarges toward the periphery it retracts the calyx involvedwith it. When the tumor is confined to either pole of thekidney, retraction may be confined to the adjacent a rule, the retraction is accompanied by distinct narrow-ing of the lumen of the calyx and effacement of its terminal. Fig. 239.—Normal pelvis—elongated calyx. irregularities. It should be remembered, however, that inthe normal pelvis there may occasionally be one or morecalyces unusually elongated. Usually the general contourof the major calyx and the irregularity of the minor calyceswill then be found quite normal. Such congenital elonga-tions are apt to occur in both kidneys, although sometimes 254 PYELOGRAPHY it is found in but one side. In order to interpret thepelvis as pathologic, retraction as well as deformity ofthe calyx must be well marked. In Fig. 239 the uppercalyx is symmetrically retracted in both kidneys. Theoutline of the calyx is otherwise normal, and the terminalirregularities are well retained. In Fig. 240 the proximalcalyx is curved and retracted to unusual length, its lumen
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectkidneys, bookyear1915
