A rare case of polythelia on the buttock, found incidentally during colonoscopy


  • Ashleigh M. Sercombe Department of General Surgery, Greenslopes Private Hospital, Brisbane, Queensland, Australia https://orcid.org/0000-0003-0396-8562
  • Joy Chakraborty Department of General Surgery, Greenslopes Private Hospital, Brisbane, Queensland, Australia




Polythelia, Supernumerary nipple, Buttock


Polythelia or supernummary nipples is a congenital anomaly where more than two nipple- areolar complexes are present. While polythelia is the most common mammary tissue malformation, it is still a rare condition with an incidence of 0.2% to 5.6%. Suppernummary nipples are usually located in the medial embryonic milk lines however, there have been some published cases of atypical locations. We present a case of a 42-year-old male who was incidentally found to have a supernummary nipple on his left buttock on colonoscopy. There was no prior family history of polythelia or any congenital abnormalities.



Camacho F, González-Cámpora R. Polythelia pilosa: a particular form of accessory mammary tissue. Dermatology. 1998;196(3):295-8.

Brown J, Schwartz RA. Supernumerary nipples: an overview. Cutis. 2003;71(5):344-6.

Halleland HH, Balling E, Tei T, Arcieri S, Mertz H, Mele M. Polythelia in a 13-year-old girl. G Chir. 2017;38(3):143-6.

Schmidt H. Supernumerary nipples: prevalence, size, sex and side predilection-a prospective clinical study. Eur J Pediatr. 1998;157(10):821-823.

Johnson CA, Felson B, Jolles H. Polythelia (supernumerary nipple): an update. South Med J. 1986;79(9):1106-8.

Mehregan AH. Supernumerary nipple. A histologic study. J Cutan Pathol. 1981;8(2):96-104.

Yilmaz AE, Sarifakioglu E, Dogan G. Supernumerary nipple: should we be alert? Pediatr Int. 2010;52(4):e190-1.

Cohen PR, Kurzrock R. Miscellaneous genodermatoses: Beckwith-Wiedemann syndrome, Birt-Hogg-Dube syndrome, familial atypical multiple mole melanoma syndrome, hereditary tylosis, incontinentia pigmenti, and supernumerary nipples. Dermatol Clin. 1995;13(1):211-29.

Pellegrini JR, Wagner RF, Jr. Polythelia and associated conditions. Am Fam Physician. 1983;28(3):129-32.

Grimshaw EC, Cohen PR. Supernumerary nipple and seminoma: case report and review of polythelia and genitourinary cancers. Dermatol Online J. 2013;19(1):4.

Urbani CE, Betti R. Accessory mammary tissue associated with congenital and hereditary nephrourinary malformations. Int J Dermatol. 1996;35(5):349-52.

Javed A, Lteif A. Development of the human breast. Semin Plast Surg. 2013;27(1):5-12.

Evans W. Polythelia in cardio-arterial disease. Br Heart J. 1959;21(1):130-6.

Kajava Y. The proportions of supernumerary nipples in the Finnish population. Kajava Y The proportions of supernumerary nipples in the Finnish population Duodecim. 1915;31:143-70.

Newman M. Supernummary nipples. Am Fam Physician. 1988;38:183-8.






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