Harry M. Burros

Cystitis glandularis with perivesical lipomatosis

Abstract Review of literature on patients with pelvic lipomatosis showed an increased incidence of proliferative cystitis, notably cystitis glandularis. With the report of 2 of our cases, the incidence appears to be as high as 75 to 80 per cent. The pathologic interrelationship of these two proliferative conditions is discussed.

Bladder Calculi in Women After Urethrovesical Suspension

There have been a number of reports recently on vesical calculi in women with a history of gynecological procedures. Within 1 year we encountered 2 patients with vesical calculi after vesicourethral suspension performed with concomitant hysterectomy. These calculi formed on a retained intravesical suture and a monofilament knitted polypropylene pledget, and they produced interesting pathological and radiographic findings.

Prostatic carcinoma metastasizing to skin and subcutaneous tissues

Abstract Carcinoma of the prostate metastasizing to the skin and subcutaneous tissues is extremely uncommon; only 14 cases are reported in the English literature, including our 2 cases. One of our cases demonstrated macular formation followed by nodular appearance. Both patients died within eight to twelve weeks after appearance of skin nodules, indicating the severity of its prognosis.

Physical properties of female urethral wall experimental method for determining relative degree of urethral wall stiffness

Abstract The female dog urethra was used in an experimental model to evaluate the relative degree of urethral wall stiffness in varying conditions. The model consisted of simultaneous monitoring of the pressure-volume relation and the external diameter changes during continuous distention of a closed urethral segment. The normal urethral response was analyzed, and changes as influenced by instrumental urethral dilation, urethral myotomy, and death were evaluated. The results indicated that appreciable increase in apparent compliance occurred under the previously mentioned experimental conditions. Although changes in specific compliance could not be reliably measured, observations on the diameter tracings suggested that a decrease would probably occur with no. 40 F. and larger-sized dilations.

Renal pseudotumor: Importance of selective arteriogram

A typical case of hypertrophy of the columns of Bertin is presented, with special consideration given the importance of the selective renal arteriogram which is, in our experience, the only diagnostic procedure of accuracy. With this in mind we have avoided renal exploration. The embryogenic origin of this entity is reviewed.

ELECTRONIC BOUGIE A BOULE CALIBRATION OF FEMALE URETHRA Technique of Recording Urethral Elastic Profile

Abstract A method of recording the forces exerted by the female urethra along its entire length, preventing the withdrawal of a specific size bougie a boule, is presented. These forces, monitored by a special transducer, are graphically documented. Aided by a motor-driven apparatus, the bougie a boule together with the transducer is withdrawn at a known rate so that a longitudinal profile of urethral elastic forces is obtained. Profiles obtained with various sizes of bougies can determine the elastic behavior of the entire length of urethra. The method is recommended for baseline clinical evaluation of patients with urethral syndrome. It is also a valuable research tool for further studies on urethra in health and disease.

Intravesical strangulation of the small bowel An unusual complication of rupture of urinary bladder

Abstract Strangulation of a loop of small bowel as the result of herniation into the urinary bladder has never been described. A case of such presentation complicating an intraperitoneal rupture of the urinary bladder is presented and pertinent literature reviewed.

Conduit and compliance responses of female canine urethra Experimental study of effects of varying amounts of instrumental dilation and urethral myotomy

Abstract The female canine urethra was subjected to varying amounts of instrumental dilation and various types of urethral myotomy, and their effects on conduit and compliant responses were studied by recording changes in urethral infusion resistance and pressure-volume relationship. Changes in the external diameter of the mid-urethra were simultaneously monitored with a displacement transducer. These studies indicated that decrease in urethral flow resistance and increase in compliance occurred commensurate with the degree of instrumental dilation. Observations on the diameter changes, however, suggested that the specific compliance was probably not increased with 45 F. dilation. Pronounced increase in expansibility and significant decrease in resistance to urethral infusion resulted following internal urethrotomy and deep external myotomy.

Conduit and regional compliance of female canine urethra: Observations during voiding and passive urethral infusion

Abstract Studies with induced voiding and passive urethral infusion were conducted in female dogs to investigate the effects of compliance restriction and constriction on the proximal, middle, and distal urethral regions. The studies included an evaluation of various surgical procedures on the distal urethral segment and external meatus. Compliance restriction on the proximal and midurethral regions produced abnormal elevations in the voiding pressure and urethral infusion resistance. No such effects were noted when similar restriction to the expansibility was applied around the distal segment. Constrictions, on the other hand, resulted in severe degrees of obstruction. Procedures such as meatal dilation, generous meatotomy, and distal third urethrotomy paradoxically produced increases in infusion resistance (4 to 15 per cent) and slight diminution in the functional diameter of the proximal region. The physiologic and clinical implications of these results are presented.

Mechanism of trigonal influence on ureter during bladder filling and voiding An experimental study in dogs

The role of the trigone and the mechanisms involved in its influence on the ureteral activity during bladder filling and voiding were investigated in 5 groups of adult mongrel dogs. The study included an evaluation of the influence of nontrigonal factors. Stimulation of the trigone with electric current and induced voiding was performed and the activity in the ureters in which linear vents were created proximal to the ureterovesical junction was monitored. Trigonal electromyography supplemented the studies. The results indicated that nontrigonal intravesical factors additionally operated on the ureter. The mechanism of the trigonal influence on the ureter was twofold. It produced maximal response at the ureterotrigonal junction causing obstruction at the terminal segment of the intravesical ureter. Second, the trigonal activity propagated proximally into the adjacent ureter, which thereby exhibited a direct smooth muscle response. Electromyographic studies of the trigone revealed increased spike activity even during nonvoiding stage of passive bladder filling.