Ultrasonically guided renal cyst aspiration

Ultrasonically guided renal cyst aspiration

gross hematuria, recurrent urinary tract infections, and hydronephrosis are most often seen. Excessive excretion of oxalic, glycolic, and glyoxylic a...

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gross hematuria,

recurrent urinary tract infections, and hydronephrosis are most often seen. Excessive excretion of oxalic, glycolic, and glyoxylic acid occur in this disease. The treatment of oxalosis has proved to be most unsatisfactory. High fluid intake, the administration of phosphate in large doses to inhibit crystal formation, and the use of pyridoxine in doses of 150 mg. per day have been recommended. Hemodialysis has been generally unsuccessful, although it temporarily reduces the concentration of oxalate. Homotransplantation has also proved unsuccessful; at autopsy, kidneys have shown oxalate deposition. The authors recommend high fluid intake, early diagnosis, and the determination of urinary oxalate excretion in patients with calcium oxalate stones. Studies on Renal Function After Relief of Complete Unilateral Ureteral Obstruction of Three Months’ Duration in Man, Ori S. Better, A. I. Arieff, S. G. Massry, C. R. Kleeman, and M. H. Maxwell (54: 234, 1973)-A case is presented in which a ureter was ligated inadvertently following pelvic surgery for massive uterine hemorrhage and was not detected for three months. A nephrostomy was performed, and a controlled study with the opposite kidney serving as the control was established to monitor the degree of return of function. At the time of the nephrostomy, the creatinine clearance was 2.7 ml. per minute. This rose to 10.2 ml. per minute within one week but remained unchanged thereafter. The filtration fraction (Cw : CPAH) was 0.22 in the normal kidney and 0.19 in the diseased kidney. The normal kidney concentrated three times better than the involved side. Phosphate excretion and the ability to acidify the urine were both diminished on the involved side. There was increased excretion of sodium chloride; however, the free water clearance was supernormal. Ureteral obstruction occurs in approximately 2 per cent of pelvic surgery. The authors have shown that even after complete obstruction for three months, a kidney able to support life can be salvaged with appropriate reconstructive surgery.

JOURNALOFUROLOGY by Daniel

Howard,

M.D.

Ultrasonically Guided Renal Cyst Aspiration, Barry B. Goldberg, and Howard M. Pollack (109: 5, 1973)In this report the authors describe their technique of utilizing ultrasound to differentiate cystic from solid mass found pyelographically and to aid in placing a needle within the cyst for aspiration. A specifically modified ultrasonic transducer containing a central lumen permitted ultrasound to be used as a guide in renal cyst aspiration. Sixteen patients with proved renal cysts underwent cyst aspiration with the use of this technique. The ultrasonic transducer was first used to localize the cyst and to provide information as to the exact size and depth of the mass. Utilizing this knowledge the proper length needle was selected, and a needle was passed through the lumen in the transducer into the tissues.

340

UROLOGY

/ SEPTEMBER

1973

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