Rare diseases · Sign or symptom
Hydrocele testis
HP:0000034
What it means
Accumulation of clear fluid in the between the layers of membrane (tunica vaginalis) surrounding the testis.
Rare diseases that can present with this22
Common30–79%
3Sometimes5–29%
14- Distal triplication 15q syndrome
- Hemihyperplasia-multiple lipomatosis syndrome
- Idiopathic steroid-sensitive nephrotic syndrome with secondary steroid resistance
- Isolated splenogonadal fusion
- Lymphatic filariasis
- MOGS-CDG
- Multiple congenital anomalies-hypotonia-seizures syndrome
- Ring chromosome 7 syndrome
and 6 more in this range
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: Hydrocele · Testicular hydrocele
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Start free with EleplanThis 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.