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Related Concept Videos

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The penis serves a dual role in sexual reproduction and urination. It consists of three main regions: the glans penis, the body, and the root, each with distinct functions and unique anatomical features.
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The glans penis, or the head, is the terminal part of the penis and houses the external urethral orifice, the exit point for urine and semen. Covered by the prepuce, or foreskin, the glans is noted for its sensitivity and plays a key role in sexual pleasure. The body of the...
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Sexual stimulation can take various forms, such as physical touch and visual or auditory cues. When this happens, the parasympathetic reflex in the sacral portion of the spinal cord is activated. This reflex stimulates the release of nitric oxide (NO), which then dilates the arterioles in the penis, increasing blood flow to the erectile tissues - the corpora cavernosa and corpus spongiosum.
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Disorders of the Male Reproductive System01:20

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Men's health issues are increasingly recognized as significant, with several conditions posing common threats. Among these, testicular cancer is especially prevalent in younger men, particularly those aged 20 to 35 years. The disease often manifests as a painless mass in the testicles, sometimes accompanied by a sensation of heaviness or a dull ache.
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Accessory Glands of the Male Reproductive System01:16

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The accessory ducts involved in sperm maturation and transportation include the epididymides, vasa deferentia, ejaculatory ducts, and urethra. These ducts play a critical role in the maturation, storage, and transportation of sperm from the testes to the urethra, where it is then released during ejaculation.
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The urethra is a hollowed tubular organ through which urine is expelled from the body. This structure extends from the bladder to the external opening, allowing urine to be released.
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Accessory Ducts of the Male Reproductive System01:25

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The male reproductive system is a complex network of organs and tissues that work together to produce and transport sperm. The epididymis, vasa deferens, ejaculatory ducts, and urethra are the accessory ducts involved in sperm maturation and transportation. These ducts play a critical role in the production and transportation of sperm from the testes to the urethra, where it is then released during ejaculation.
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US of the Penis: Beyond Erectile Dysfunction.

Ying Ying Kho1, Sally Hsueh Er Lee1, Kenneth Chin1

  • 1From the Allied Health Division (Y.Y.K., S.H.E.L., N.Z.S., V.C.M., D.H.S., S.C., L.W.T., S.M.T.) and Division of Radiological Sciences (K.C., A.G., A.P., N.V.), Singapore General Hospital, 31 Third Hospital Ave, Singapore 168753.

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Summary

High-frequency ultrasound (US) is a key tool for evaluating penile anatomy and blood flow, aiding in diagnosing conditions like erectile dysfunction and trauma. This noninvasive imaging technique facilitates rapid diagnosis in emergencies, improving patient outcomes.

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Area of Science:

  • Radiology
  • Medical Imaging
  • Urology

Background:

  • High-frequency ultrasound (US) is the primary imaging modality for penile evaluation.
  • It offers detailed anatomical visualization and dynamic blood flow assessment.
  • US is noninvasive, cost-effective, and well-tolerated by patients.

Purpose of the Study:

  • To review the utility of ultrasound in diagnosing a spectrum of penile conditions.
  • To highlight key ultrasound features, differential diagnoses, and management strategies.
  • To emphasize the importance of meticulous technique for diagnostic accuracy.

Main Methods:

  • Gray-scale, color, and spectral Doppler ultrasound techniques with a linear transducer.
  • Pharmacologic induction of erection for specific assessments.
  • Review of common and uncommon penile abnormalities and their ultrasound manifestations.

Main Results:

  • Ultrasound facilitates timely diagnosis of penile emergencies like priapism and trauma.
  • It is valuable in assessing vasculogenic impotence and Peyronie disease.
  • Doppler US is crucial for follow-up of endovascular revascularization procedures.

Conclusions:

  • Radiologists must be proficient in ultrasound techniques and penile pathologies for accurate diagnosis.
  • Ultrasound is essential for managing both emergent and elective penile conditions.
  • Optimized imaging techniques improve diagnostic accuracy and patient management.