Erection is basically a spinal reflex that can be initiated by recruitment of penile afferents, but also by visual, olfactory, and imaginary stimuli. The reflex involves both autonomic and somatic efferents and is modulated by supraspinal influences. Several central transmitters involved in the erectile control have been identified. Dopamine, acetylcholine, nitric oxide (NO), and peptides, such...

BACKGROUND The aim of the study was to describe the shear wave velocity (SWV) values of the penis by virtual touch tissue quantification (VTTQ) and to examine the clinical usefulness of this procedure in evaluation of the rigidity changes in penile erection. PATIENTS AND METHODS.: VTTQ was performed in 37 healthy volunteers. In the course of erection, SWV values of glans penis, corpus penis an...

Erectile dysfunction is the most common side effect after prostatectomy. There are currently five categories of available treatment options for erectile dysfunction for men following radical prostatectomy. The first and most common treatment is oral phosphodiesterase type 5 inhibitors (sildenafil, vardenafil, or tadalafil). Despite their popularity, these medications do not always produce an er...

OBJECTIVES To assess the outcome of new penile cavernosal-dorsal vein shunt using a saphenous vein graft. Traditional surgeries for priapism have high failure rate and subsequent impotence. METHODS We reviewed the medical records of, and administered a questionnaire and the International Index of Erectile Function to, 16 consecutive patients with priapism who had treated with the penile caver...

Impotence is syndrome involving the interaction of psychogenic, hormonal, neurological, arterial, venous & sinusoidal factors. Management of impotence has evolved from a time-born pattern of sympathetic discussion and empiric use of medication to a scientifically planned diagnostic protocol and specific treatment regime. The present study was undertaken to assess the effects of pharmacologicall...

INTRODUCTION Men with nonpalpable isolated septal scars (ISS) identified with color duplex ultrasonography (CDU) comprise a group of previously unrecognized patients with wide-ranging sexual concerns. AIM We aim to identify the clinical characteristics of patients presenting with this atypical form of Peyronie's disease characterized by the absence of palpable deformity. MATERIALS AND METHO...

Background To examine the changes in penile vascular parameters after the administration of collagenase Clostridium histolyticum (CCH) in patients with Peyronie's disease (PD). Methods We retrospectively reviewed the records for all patients treated with CCH for PD between 04/2014 and 05/2017 who underwent penile duplex Doppler ultrasound (PDDU) after pharmacologically induced erection both b...

Penile erection is understood to be a neurally regulated physiologic event, although the underlying mechanisms have eluded characterization for more than a century. The classical autonomic parasympathetic and sympathetic nervous systems are involved, but the process of erection does not appear to require cholinergic or adrenergic mechanisms. As the search for the principal mediator of penile er...

We aim to investigate the correlations between hemodynamic parameters, penile rigidity grading, and the therapeutic effects of phosphodiesterase type 5 inhibitors using color Doppler flow imaging after intracavernosal injection in patients with erectile dysfunction. This study involved 164 patients. After intracavernosal injection with a mixture of papaverine (60 mg), prostaglandin E 1 (10 mg),...

OBJECTIVE We report a rare case of malignant priapism secondary to transitional cell carcinoma. METHODS The patient with bladder cancer (pT4G3) presented with painful penile erection. Corpora cavernosa biopsy was done. RESULTS The pathologic diagnosis was penile metastasis of transitional cell carcinoma. CONCLUSIONS Priapism secondary to penile metastasis of transitional cell carcinoma is...