Supernumerary nipple
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| Supernumerary nipple Classification and external resources | |
 | |
|---|---|
| Supernumerary nipples. (Third and fourth nipple of male scandinavian). A - regular birthmark. B - regular nipple. C - Supernumerary nipple | |
| ICD-10 | Q83.3 |
| ICD-9 | 757.6 |
| OMIM | 163700 |
| DiseasesDB | 32140 |
| MedlinePlus | 003110 |
| eMedicine | derm/735 |
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A supernumerary nipple (also known as a third nipple, triple nipple, thripple, accessory nipple, polythelia or polymastia) is an additional nipple occurring in mammals, including humans. Often mistaken for moles, supernumerary nipples are diagnosed at a rate of 1 in 18 humans[1].
Presentation
The nipples appear along the two vertical "milk lines", which start in the armpit on each side, run down through the typical nipples and end at the groin. They are classified into eight levels of completeness from a simple patch of hair to a milk-bearing breast in miniature. [1][1]
| type | glandular tissue | nipple | areola | fat tissue | hair patch |
| 1 | yes | ||||
| 2 | yes | yes | |||
| 3 | yes | yes | |||
| 4 | yes | ||||
| 5 ("pseudomamma") | yes | yes | yes | ||
| 6 ("polythelia") | yes | ||||
| 7 ("polythelia areolaris") | yes | ||||
| 8 ("polythelia pilosa ") | yes |
Polythelia refers to the presence of an additional nipple alone while polymastia denotes the much rarer presence of additional mammary glands.
Although usually presenting on the milk line, pseudomamma can appear as far away as the foot.[1]
A possible relationship with mitral valve prolapse has been proposed.[1]
External links
- Healthwise "Accessory nipples (polythelia) and breast tissue (polymastia)" at uhseast.com, accessed 26 December 2004
- BBC: Cancer hope over breast gene find at BBC
- My physical deformity at infactah.com
- The Superfluous Nipple news and information blog.
See also
- Accessory breast, a condition where an entire additional breast is present rather than simply an additional nipple
Acknowledgement and Attribution Regarding Sources of Content
Some of the initial content on this page may be incorporated in part from copyleft sources in the public domain including wikis such as Wikipedia and AskDrWiki. Drug information for patients came from the The National Library of Medicine. Infectious disease information may have come from the Centers for Disease Control (CDC). Differential Diagnoses are drawn from clinicians as well as an amalgamation of 3 sources: 1.The Disease Database; 2. Kahan, Scott, Smith, Ellen G. In A Page: Signs and Symptoms. Malden, Massachusetts: Blackwell Publishing, 2004:3; 3. Sailer, Christian, Wasner, Susanne. Differential Diagnosis Pocket. Hermosa Beach, CA: Borm Bruckmeir Publishing LLC, 2002:7 .
