Teratoma classification

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Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1] Associate Editor(s)-in-Chief: Gertrude Djouka, M.D.[2], Masoud Bitarafan, M.D[[3]]Amandeep Singh M.D.[4]


Teratomas are subtypes of germ cell tumors.Teratomas may be classified into four subgroups based on the histology and site features.


  • Teratomas may be classified into four subgroups based on the histology features.[1][2][3]
    • Mature teratoma which is benign cystic and solid.
    • Immature teratoma which is malignant with some embryonic component.
    • Malignant teratoma with some somatic malignant neoplasm component.
    • Monodermal teratoma.
  • Teratomas may also be classified based on the site:[4]
    • Intragonadal (ovary and testis).
    • Extragonadal (sacrococcygeal, retroperitoneum, mediastinum, and others).


  1. Zuquello RÁ, Tagliari G, Bagatini R, Camiña RH, Caron R, Lorencette NA; et al. (2016). "Immature teratoma presenting as a soft-tissue mass with no evidence of other sites of involvement: a case report". Diagn Pathol. 11 (1): 76. doi:10.1186/s13000-016-0527-x. PMC 4986345. PMID 27528018.
  2. Peterson, Christine M.; Buckley, Celine; Holley, Susan; Menias, Christine O. (2012). "Teratomas: A Multimodality Review". Current Problems in Diagnostic Radiology. 41 (6): 210–219. doi:10.1067/j.cpradiol.2012.02.001. ISSN 0363-0188.
  3. Meinhold-Heerlein I, Fotopoulou C, Harter P, Kurzeder C, Mustea A, Wimberger P; et al. (2016). "The new WHO classification of ovarian, fallopian tube, and primary peritoneal cancer and its clinical implications". Arch Gynecol Obstet. 293 (4): 695–700. doi:10.1007/s00404-016-4035-8. PMID 26894303.
  4. Varma AV, Malpani G, Agrawal P, Malukani K, Dosi S (2017). "Clinicopathological spectrum of teratomas: An 8-year retrospective study from a tertiary care institute". Indian J Cancer. 54 (3): 576–579. doi:10.4103/ijc.IJC_294_17. PMID 29798962.