Renal pelvic tumors

In addition to ALPE, mild acute renal failure, including dehydration, acute pyelonephritis, and renal pelvic tumors, is visualized as wedge-shaped contrast enhancement [15]. However, acute pyelonephritis and renal pelvic tumors are visualized as unilateral lesions, whereas ALPE is visualized as a bilateral lesion therefore, differentiation is possible. For a definitive diagnosis, the presence of patchy contrast enhancement must be demonstrated when the serum creatinine level is in the range from 1.2 to 3.5 mg/dl. However, as described above, a definitive diagnosis is not always necessary in clinical practice. 

Postrenal ARF is due to obstruction of urinary outflow. Causes include benign prostatic hypertrophy, pelvic tumors, and precipitation of renal calculi.7 Rapid resolution of postrenal ARF without structural damage to the kidney can occur if the underlying obstruction is corrected. Postrenal ARF accounts for less than 10% of cases of ARF.6... 

This observation is related to that made by us (P4a) that kynurenine alone, or sometimes together with 3-hydroxykynurenine and 3-hydroxy-anthranilic acid, was found to be abnormally elevated in 17 of cases with renal tumors, in 3 of 6 cases with pelvic tumors, and in 1 of 2 cases with cystic renal disease. 

The gamma camera, with computer-assisted data analysis, is used together with l3lI-hippuran to measure renal function. The renogram is of most clinical value in the assessment of ureter impairment m pre-and postoperative patients with carcinoma of the cervix and other pelvic and gynecological tumors. 

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