Diphallia

Overview

Illustration of diphallia

Diphallia, also known as penile duplication, is a rare congenital condition in which a male is born with two penises. This anomaly was first reported in 1609 by the Swiss physician Johannes Jacob Wecker. The condition is extremely rare, with an estimated occurrence of 1 in 5 to 6 million live births.

Etiology

The exact cause of diphallia is not well understood, but it is believed to occur during the early stages of embryonic development. It is thought to result from an abnormality in the cloacal membrane during the fourth to sixth weeks of gestation. Genetic factors, environmental influences, and teratogenic agents may contribute to the development of this condition.

Classification

Diphallia can be classified into two main types:

• Complete diphallia: Both penises are fully developed and functional.
• Partial diphallia: One of the penises is smaller or underdeveloped.

Associated Anomalies

Diphallia is often associated with other congenital anomalies, including:

• Hypospadias
• Epispadias
• Bladder exstrophy
• Renal agenesis
• Duplicated urethra
• Anorectal malformations

Diagnosis

Diagnosis of diphallia is typically made at birth through physical examination. Further evaluation may include imaging studies such as ultrasound, MRI, or CT scan to assess the extent of duplication and associated anomalies.

Management

The management of diphallia depends on the type and severity of the condition, as well as the presence of associated anomalies. Surgical intervention is often required to correct functional and cosmetic issues. The goals of surgery may include:

• Removal of the less functional or smaller penis
• Reconstruction of the urethra
• Correction of associated anomalies

Prognosis

The prognosis for individuals with diphallia varies depending on the severity of the condition and the presence of associated anomalies. With appropriate surgical management, many individuals can lead normal lives.

Related pages

• Congenital disorder
• Hypospadias
• Bladder exstrophy