This 20 y/o female complained of pelvic pain. A portion of her KUB shown above demonstrates four well formed teeth on the right side of the pelvis compatible with a well differentiated ovarian teratoma (dermoid). She was referred to a Gynecologist for extraction :-). This confirmed the diagnosis of a mature well differentiated cystic teratoma of the ovary. It contained four well formed teeth and a portion of mandible.
Usually, dermoid cysts contain representative tissues of the three embryonic germ cell layers: ectoderm, mesoderm and endoderm. Sebaceous material, hairs, cartilages, teeth, even thyroid tissue are frequently observed. A well-formed jaw and tongue has been reported.2 Teratomas of other organs have also been reported to contain teeth.13

  1. Cavenaile C, Reed J, Fiorito D. Ovarian teratoma with a high level of differentiation. South Med J 2001 May;94(5):522-3 PMID:11372807
  2. Erian MM. Unusual contents of a dermoid cyst of the ovary removed by laparoscopy. Aust N Z J Obstet Gynaecol 1994 May;34(2):195-6 PMID:7980313
  3. Dick HM, Honore LH. Dental structures in benign ovarian cystic teratomas (dermoid cysts). A study of ten cases with a review of the literature. Oral Surg Oral Med Oral Pathol 1985 Sep;60(3):299-307 PMID:3862043
  4. McGinnis JP Jr, Parham DM. Mandible-like structure with teeth in an ovarian cystic teratoma. Oral Surg Oral Med Oral Pathol 1978 Jan;45(1):104-6 PMID:271275
  5. Bohrer SP. Teeth in a dermoid tumor. Oral Surg Oral Med Oral Pathol 1974 Jul;38(1):162-3 PMID:4525683
  6. Daw E. A mandible-like structure in an ovarian dermoid cyst. Br J Clin Pract 1971 Apr;25(4):185-6 PMID:5575915
  7. Main DM. Tooth identity in ovarian teratomas. Br Dent J 1970 Oct 6;129(7):328-32 PMID:5278359
  8. Audiat P, Decombas M, Kaqueler JC. SEM contribution to the morphological study of dental structures in ovarian cystic teratoma. J Oral Pathol Med 1990 Oct;19(9):435-8 PMID:2269940
  9. Sheth S, Fishman EK, Buck JL, Hamper UM, Sanders RC. The variable sonographic appearances of ovarian teratomas: correlation with CT. AJR Am J Roentgenol 1988 Aug;151(2):331-4 PMID:3293377
  10. Friedman AC, Pyatt RS, Hartman DS, Downey EF Jr, Olson WB. CT of benign cystic teratomas. AJR Am J Roentgenol 1982 Apr;138(4):659-65 PMID:6978028
  11. Caspi B, Appelman Z, Rabinerson D, Elchalal U, Zalel Y, Katz Z. Pathognomonic echo patterns of benign cystic teratomas of the ovary: classification, incidence and accuracy rate of sonographic diagnosis. Ultrasound Obstet Gynecol 1996 Apr;7(4):275-9 PMID:8726881
    Comment in: Ultrasound Obstet Gynecol. 1996 Sep;8(3):210-1.
  12. Ewing HP, Gear MW. Enteroliths in Meckels diverticulum misinterpreted as teeth. Br J Surg 1984 Feb;71(2):157 PMID:6692114
  13. Smith CJ. A teratoma of the lung containing teeth. Ann R Coll Surg Engl 1967 Nov;41(5):413-23 PMID:6061946

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