familial supernumerary nipples
Findings
No curated finding names familial supernumerary nipples yet. Everything below is reference data from Mondo, HPO and GenCC, not evidence about what affects it.
Definition
Familial supernumerary nipples is a rare breast malformation characterized by the presence, in various members of a single family, of one or more nipple(s) and/or their related tissue, in addition to the normal bilateral chest nipples. The anomaly is usually situated along the embryonic milk line, from axillae to inguinal regions, but other locations are also possible. Association with dental abnormalities, Becker nevus, renal or underlying breast tissue malignancy and genitourinary malformations has been reported.
Definition from the Mondo Disease Ontology (MONDO:0008101), read 2026-09-29. CC BY 4.0.
Features
2 features
What the disease is reported to present with, and how often among people who have it — never how often a feature means the disease. HPO, annotations 2026-09-02.
- Supernumerary nippleHPOHP:0002558
- Very frequent (80% to 99% of cases)
- Abnormality of the genitourinary systemHPOHP:0000119
- Occasional (5% to 29% of cases)
Where it sits
Other names
1 name
Resolves to: familial supernumerary nipples
- Also called
- isolated polythelia