Evaluation and treatment of erectile dysfunction.

Erectile dysfunction has an organic etiology in most cases, with vascular disease the single most common cause. In addition to a thorough history and physical examination, clinical evaluation may include hormonal assessment, diabetes screening, nocturnal tumescence testing and color Doppler flow studies of the penile vasculature. Therapy for erectile dysfunction has progressed rapidly during the past decade, with alternatives including hormone supplements, vacuum constriction devices, penile self-injection therapy and penile prostheses.

Annular constriction of the rectum secondary to transitional cell carcinoma of the bladder.

Recurrent transitional cell carcinoma of the bladder is often a locally progressive disease. Regional lymph node metastasis is a frequent finding and may be the first sign of recurrence. Involvement of the gastrointestinal tract is rare, but metastasis to the colon, small intestine, and stomach have been reported.

Ultrasonographic characteristics of testicular adenomatoid tumors.

Purpose: We determined the characteristics of testicular adenomatoid tumors which could distinguish these lesions from testicular malignancies.

Materials And Methods: Clinical presentation and ultrasonographic findings in 3 men with testicular adenomatoid tumors were compared with those in 10 men treated for testicular malignancies.

Results: Clinical presentation was similar for all patients.

Patient satisfaction with current impotence therapy.

One hundred ninety-eight impotent men were evaluated between July 1993 and June 1994. A "patient goal-directed" approach was used in all cases. Treatment options presented to patients included: oral yohimbine, vacuum constriction devices, penile self-injection therapy, penile prostheses, and testosterone supplementation when clinically indicated.

A method of human semen centrifugation to minimize the iatrogenic sperm injuries caused by reactive oxygen species.

Current techniques of sperm preparation for in vitro fertilization or intrauterine insemination require centrifugation of human semen to separate spermatozoa from the seminal plasma. Centrifugation increases reactive oxygen species (ROS) formation in semen. Moreover, high levels of ROS are associated with sperm membrane injury through spontaneous lipid peroxidation, which may alter sperm function.