Rare diseases · Sign or symptom

Bifid penis

Penile duplication

HP:0100599

What it means

Two penile structures, separated from the tip to the base of the shaft.

In individuals with complete duplication often one will find Hypospadias, Epispadias, Bladder exstrophy, or Bifid scrotum, which should be coded separately, as well as urinary tract duplications, renal anomalies, and gastrointestinal duplications. The terms indicate the presence of (part of) two penises, but do not indicate whether they are caused by splitting or double formation.

Rare diseases that can present with this2

Very common80–99%

1

The range is how often this sign appears among people diagnosed with each disease — it is not a probability of having any of them. Many of these signs also occur in common, non-rare conditions. A sign on this page is a conversation to have with a clinician, not a conclusion.

Part of the broader category

Also called: Diphallia

Bifid penis

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This page uses the Human Phenotype Ontology (2026-06-23) — Human Phenotype Ontology Consortium, hpo.jax.org. Disease associations from Orphanet (INSERM), CC BY 4.0. Content is educational and is not medical advice.