Computed tomography of renal pelvic filling defects.

Abstract

Thirteen patients with a variety of renal pelvic filling defects were evaluated using computed tomography (CT). Nonopaque calculi and some blood clots can be more accurately differentiated with this modality than has heretofore been possible. In transitional-cell carcinoma of the renal pelvis, the main value of CT appears to be in tumor staging. CT may also be helpful where urography cannot discriminate between extrinsic compression and true intraluminal renal pelvic defects.

Main renal vein invasion by a transitional cell carcinoma of the renal pelvis: Documentation with CT

“…CT can be very helpful in the evaluation of the nonexcreting kidney and its role in the staging of transitional cell neoplasms is becoming better defined [11,12]. While CT is unable to distinguish tumors limited to the mucosa from those with submucosal or muscle invasion, its ability to detect intrarenal extension, hilar involvement, periureteric spread, enlarged regional lymph nodes, or vascular invasion has been well established [1, 8, I1, 13].…”

CT of Carcinoma of the Renal Pelvis

“…It can also be combined with brush-biopsies and urine sampling for cytology (1 5). CT on the other hand may confirm the tumor diagnosis in the case of a radiolucent filling defect on a urogram or retrograde pyelogram (4,22,24). CT also has the unique feature relative to i.v.…”

Role of ultrasound and CT scan in evaluation of Renal Masses

“…In the present study, 8.3% tumours were diagnosed as cystic renal carcinomas, of which only one appeared cystic on US. According to Pollack et al 28 about 5% of renal cell carcinomas are cystic.…”