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Biomedical subjects

R K Vinson

Publications and source records attributed to R K Vinson.

18 recordsLinked to original sources
PubMed1992

Percutaneous renal biopsy of the solitary kidney: a contraindication?

We recently were presented with a patient from the nephrology service, with the request to perform open renal biopsy because of a solitary functioning kidney. We performed the open biopsy and the patient subsequently had a wound infection, leading us to question the recommendation in the literature stating that a solitary kidney is an absolute contraindication for percutaneous renal biopsy. In a review of the literature from 1951 to 1990, a total of 19,459 percutaneous renal biopsies has been reported with an overall complication rate of 2.1 to 10.8%, the majority (90%) of which did not require definitive treatment. Only 13 nephrectomies (0.06%) were required secondary to complications. The overall mortality rate was 0.08%. We reviewed 157 percutaneous renal biopsies done at this institution from 1985 to 1990 with a minor complication rate of only 5% and no major complications or loss of kidney function. The mortality rate was 0. Based on our study and a review of the literature, both showing an extremely small percentage of permanent loss of kidney function or mortality, we propose that a solitary kidney no longer be recommended as an absolute contraindication to percutaneous renal biopsy.

Biopsy↗
PubMed1986

Acute obstructive renal failure secondary to granulocytic sarcoma (chloroma).

We report an unusual case of bilateral ureteral obstruction secondary to granulocytic sarcoma of the uterine cervix. Proximal urinary diversion followed by radiation therapy to the tumor relieved the obstruction. The need for prompt diagnosis and treatment of this rare neoplasm is stressed.

Acute Kidney Injury↗
PubMed1979

Urolithiasis from stapler anastomosis.

The simplicity of operation and versatility and speed of automatic stapling devices in the creation of ileal loops have been amply documented. Three cases of stone formation in the ileal loop, secondary to encrustation about the staples, are reported herein, and the modification to the surgical technic which would obviate this problem is presented.

Adult↗
PubMed1979

Cystometry in upright position: accurate identification of decompensated bladder.

Cystometrograms obtained in the physiologic erect position have been found to picture accurately the classic decompensated bladder in women with recurrent urinary tract infections. The standard supine cystometrogram, however, may be inaccurate or normal in females with a history of infrequent voiding and prolonged vesical overdistention.

Adolescent↗
PubMed1979

Testicular tumor in male pseudohermaphrodite with X/XY chromosomal mosaicism.

A case of testicular tumor in an intersex patient is presented. Knowledge of the potential of gonadal malignancy is important in the management of disorders of sexual differentiation. These patients, in whom the fields of oncology, embryology, endocrinology, and genetics intersect, provide a fruitful ground for clinical investigation.

Adult↗
PubMed1978

Interstitial cell tumor. Profile of hormone-producing tumor.

Interstitial cell tumor of the testis in an adult male can present with feminization and psychologic changes. The feminization and psychologic changes most likely reflect production of estrogen by the interstitial cell tumor. Removal of the tumor causes rapid return of the pituitary-testicular axis to normal, loss of feminization, and development of male psychosocial characteristics.

Adult↗
PubMed1977

Pseudoureterocele: a uroradiologic entity.

An analysis of 5 patients with an acquired dilatation of the distal ureter, simulating a simple ureterocele, is herein reported. Radiologically, pseudoureteroceles are more likely to be associated with ipsilateral upper tract obstruction and have asymmetric intravesical dilatation. The urologist should be aware of this urographic deformity, for the majority of pseudoureteroceles are related to malignancy involving or invading the bladder.

Aged↗
PubMed1977

Intermittent catheterization in the treatment of acute purulent urethritis: case report.

Acute purulent urethritis is a complication associated with an indwelling. Foley catheter in male patients. A refractory purulent urethral discharge, fever and the sequelae of urethral stricture, periurethral abscess and epididymitis are familiar problems to the urologist. The usual therapy is removal of the catheter, antibiosis and provision for another type of vesical drainage. Our recent successful experience using clean intermittent catheterization to treat an acute urethritis is presented.

Acute Disease↗
PubMed1977

Ureteroceles vs. pseudoureteroceles in adults. Urographic diagnosis.

Simple ureteroceles discovered in adults on excretory urography have long been regarded as congenital anomalies, usually innocuous. Pseudoureteroceles are acquired dilatations of the submucosal portion of the distal ureter that mimic simple ureteroceles. The authors compared 5 pseudoureteroceles and 13 simple ureteroceles and found that the former were distinguished by asymmetry of the dilated ureteral lumen, moderate to severe obstruction of the upper tract, and evidence of an acquired cause such as a calculus or abnormal vesical mucosal pattern. The distinction is important, since most pseudoureteroceles were related to malignancy involving the bladder.

Adult↗
PubMed1976

Uninhibited neurogenic bladder in adults.

The uninhibited neurogenic bladder is a common entity. It is characterized by urge incontinence, frequency, enuresis, and recurrent urinary tract infections. The diagnosis can only be made by a thorough urologic investigation, including cystometrography. A sound treatment program involves the use of anticholinergic medication to abolish uninhibited contractions, frequent voiding to keep intravesical pressure low, and antibiotic treatment when indicated for concurrent infection.

Adolescent↗