II. Definitions
- Teratoma
- Non-seminomatous germ cell tumor
- Pluripotent cells, containing various germ cell origins (endoderm, mesoderm, ectoderm)
- Found in the Testis, ovary as well as extra-genital sights (e.g. CNS, mediastinum, lung, Stomach, Sacrum)
- Mature Teratomas contain well-differentiated adult type tissues (e.g. calcified teeth, hair)
- Immature Teratomas contain fetal type tissues
- Teratomas may be benign or malignant
- Benign Ovarian Teratoma
- Benign ovarian germ cell tumor
- Dermoid Ovarian Cyst (Mature Ovarian Teratoma)
- Type of Ovarian Cystic Teratoma, typically unilateral
- Presents as Ovarian Mass often with sebaceous material, hair, calcified teeth, fat, bone, Muscle and other tissue
- Mature Ovarian Teratomas without fetal tissue types are benign in most cases (>98%)
- Dermoid Skin Cyst
- Teratomas are referred to as Dermoid Cysts when they occur in infants and children
- Skin dermoids are typically found in the periorbital region, but may occur in the head or neck
- Dermoid Cysts are subcutaneous lesions containing a mix of keratin, Sebaceous Glands, hair
- Left untreated as children, risk of craniofacial extension in adulthood
- Pryor (2005) Otolaryngol Head Neck Surg 132(6): 938-42 [PubMed]
III. Imaging: Ultrasound findings
- Ovarian Mass with hyperechoic area with acoustic shadow
- Fluid-fluid level with echogenic fluid above
- Hyperechoic lines and spots (dermoid mesh)
IV. Complications
V. References
Images: Related links to external sites (from Bing)
Related Studies
| Definition (CHV) | A benign tumor resulting from abnormal embryonic development |
| Definition (CHV) | A benign tumor resulting from abnormal embryonic development |
| Definition (CHV) | A benign tumor resulting from abnormal embryonic development |
| Definition (CHV) | A benign tumor resulting from abnormal embryonic development |
| Definition (CHV) | A benign tumor resulting from abnormal embryonic development |
| Definition (CHV) | A benign tumor resulting from abnormal embryonic development |
| Definition (CHV) | A benign tumor resulting from abnormal embryonic development |
| Definition (CHV) | A benign tumor resulting from abnormal embryonic development |
| Definition (CHV) | A benign tumor resulting from abnormal embryonic development |
| Definition (NCI) | A mature teratoma characterized by the presence of a cyst which is lined by mature tissue resembling the epidermis and the epidermal appendages. It occurs in the ovary, testis, and extragonadal sites including central nervous system and skin. |
| Definition (NCI_NCI-GLOSS) | A type of benign (not cancer) germ cell tumor (type of tumor that begins in the cells that give rise to sperm or eggs) that often contains several different types of tissue such as hair, muscle, and bone. |
| Definition (NCI_CDISC) | A benign neoplasm comprised of a cyst, lined by mature epidermis-like tissue with dermal appendages. |
| Definition (MSH) | A tumor consisting of displaced ectodermal structures along the lines of embryonic fusion, the wall being formed of epithelium-lined connective tissue, including skin appendages, and containing keratin, sebum, and hair. (Stedman, 25th ed) |
| Concepts | Neoplastic Process (T191) |
| MSH | D003884 |
| ICD10 | M9084/0 , K09.8 |
| SnomedCT | 123151001, 72277008, 439575008, 419952004, 189117002, 189845005, 269641006, 311561000009100, 417137001, 417609007, 416529009 |
| English | Cyst, Dermoid, Cysts, Dermoid, Dermoid, Dermoid Cyst, Dermoid Cysts, DERMOID CYST, [M]Dermoid cyst, Dermoid cyst NOS, Mature cystic teratoma (morphologic abnormality), Mature cystic teratoma, Mature cystic teratoma (disorder), Benign Cystic Teratoma, Dermoid Cyst [Disease/Finding], dermoid cysts, Cyst;dermoid, dermoid cyst, mature teratoma, benign teratoma, mature cystic teratoma, cystic teratoma, dermoid, dermoids, horn cyst, Dermoids, [M]Dermoid cyst (disorder), Dermoid cyst (morphologic abnormality), Dermoid cyst (finding), Dermoid cyst (disorder), Dermoid sinus, BENIGN CYSTIC TERATOMA, DERMOID CYST, BENIGN, MATURE CYSTIC TERATOMA, DERMOID, Dermoid cyst, Dermoid cyst, NOS, Dermoid, NOS, Dermoid cyst -RETIRED-, Mature Cystic Teratoma, "Dermoid" tumor (morphologic abnormality), "Dermoid" tumor, "Dermoid" tumour |
| Dutch | dermoïdcyste, NAO, dermoïdcyste, Cyste, dermoïd-, Dermoïdcyste, Dermoïd |
| French | Kyste dermoïde SAI, Kyste dermoïde |
| German | Dermoidzyste NNB, Dermoidzyste, Dermoid |
| Italian | Cisti dermoide NAS, Dermoide, Cisti dermoide |
| Portuguese | Quisto dermóide NE, Dermoide, Cisto Dermoide, Quisto dermóide |
| Spanish | Quiste dermoide NEOM, quiste dermoide (trastorno), teratoma quístico maduro, quiste dermoide (anomalía morfológica), teratoma quístico maduro (anomalía morfológica), quiste dermoide, teratoma quístico maduro (trastorno), quiste dermoideo (concepto no activo), quiste dermoide (hallazgo), quiste dermoideo, Quiste dermoide, dermoide, tumor dermoide (anomalía morfológica), tumor dermoide, Dermoide, Quiste Dermoide |
| Japanese | 皮様嚢腫ＮＯＳ, ﾋﾖｳﾉｳｼｭNOS, ﾋﾖｳﾉｳｼｭ, 皮様嚢腫, 類皮嚢胞, 皮様のう胞, 皮様嚢胞, 良性嚢胞性奇形腫, 類皮のう胞, 類皮嚢腫, 類皮腫 |
| Swedish | Dermoidcysta |
| Czech | dermoidní cysta, Dermoidní cysta, Dermoidní cysta NOS |
| Finnish | Dermoidikysta |
| Russian | DERMOID, DERMOIDNAIA KISTA, ДЕРМОИД, ДЕРМОИДНАЯ КИСТА |
| Polish | Skórzak, Torbiel skórzasta, Torbiel łojowa |
| Hungarian | Dermoid cysta, Dermoid cysta k.m.n. |
| Norwegian | Dermoidcyste |
Ontology: Teratoma (C0039538)
| Definition (MSH) | A true neoplasm composed of a number of different types of tissue, none of which is native to the area in which it occurs. It is composed of tissues that are derived from three germinal layers, the endoderm, mesoderm, and ectoderm. They are classified histologically as mature (benign) or immature (malignant). (From DeVita Jr et al., Cancer: Principles & Practice of Oncology, 3d ed, p1642) |
| Definition (CHV) | a tumor that consists of multiple kinds of tissues |
| Definition (CHV) | a tumor that consists of multiple kinds of tissues |
| Definition (CHV) | a tumor that consists of multiple kinds of tissues |
| Definition (CHV) | a tumor that consists of multiple kinds of tissues |
| Definition (NCI_CDISC) | A germ-cell neoplasm derived from pluripotent cells and consisting of components from one or more of the three germ-cell layers, for which the malignancy status has not been established. |
| Definition (NCI) | A non-seminomatous germ cell tumor characterized by the presence of various tissues which correspond to the different germinal layers (endoderm, mesoderm, and ectoderm). It occurs in the testis, ovary, and extragonadal sites including central nervous system, mediastinum, lung, and stomach. According to the level of differentiation of the tissues which comprise the tumor, teratomas are classified as mature or immature. Mature teratomas are composed of well differentiated, adult-type tissues. Immature teratomas are composed of immature, fetal-type tissues. Testicular teratomas in children follow a benign clinical course. Mature ovarian teratomas without a fetal-type component have an excellent outcome. The prognosis of immature ovarian teratomas is related to the grade and stage of the tumor. |
| Definition (NCI_NCI-GLOSS) | A type of germ cell tumor that may contain several different types of tissue, such as hair, muscle, and bone. Teratomas occur most often in the ovaries in women, the testicles in men, and the tailbone in children. Not all teratomas are malignant. |
| Definition (CSP) | true neoplasm composed of a number of different types of tissue, none of which is native to the area in which it occurs; composed of tissues that are derived from three germinal layers, the endoderm, mesoderm, and ectoderm; may be solid or cystic and are classified histologically as mature, immature, and malignant. |
| Concepts | Neoplastic Process (T191) |
| MSH | D013724 |
| ICD10 | M9080/1 |
| SnomedCT | 55818009, 189848007, 189844009, 189846006 |
| English | Dysembryoma, Dysembryomas, Teratoid Tumor, Teratoid Tumors, Teratoma, Teratomas, Tumor, Teratoid, Tumors, Teratoid, TERATOMA, Teratoma NOS, [M]Teratoma NOS, [M]Teratomas, Teratoma, no ICD-O subtype, Teratoma [Disease/Finding], teratoma, teratomas, teratoid tumor, teratoid tumors, [M]Teratomas (morphologic abnormality), [M]Teratoma NOS (morphologic abnormality), [M]Teratoma NOS (disorder), Teratoma, no International Classification of Diseases for Oncology subtype, Teratoma, no ICD-O subtype (morphologic abnormality), Teratoma, no International Classification of Diseases for Oncology subtype (morphologic abnormality), TERATOMA, UNDETERMINED, Teratoma, NOS, Teratoma (morphologic abnormality) |
| French | TERATOME, Tératome SAI, Tumeur organoïde, Tératome, Tumeur tératoïde, Dysembryome |
| Portuguese | TERATOMA, Teratoma NE, Tumor Teratoide, Disembrioma, Teratoma |
| Spanish | TERATOMA, Teratoma NEOM, teratoma (anomalía morfológica), teratoma, sin subtipo CIE-O, teratoma, no clasificado como subtipo en CIE-O (anomalía morfológica), teratoma, sin subtipo CIE-O (anomalía morfológica), teratoma, no clasificado como subtipo en CIE-O, [M]teratoma, SAI (anomalía morfológica), [M]teratomas (anomalía morfológica), [M]teratomas, [M]teratoma, SAI, Teratoma Cístico, teratoma, Teratoma, Disembrioma, Tumor Teratoideo |
| German | TERATOM, Teratom NNB, Dysembryom, Embryonales Teratom, Teratoide Tumoren, Teratoma embryonale, Teratom |
| Dutch | teratoom NAO, teratoom, Dysembryoom, Teratoom, Teratoom, cystisch, Teratoom, matuur, Teratoïde tumor |
| Italian | Teratoma NAS, Disembrioma, Teratoma maturo, Tumore teratoide, Teratoma cistico, Teratoma |
| Japanese | 奇形腫ＮＯＳ, ｷｹｲｼｭ, ｷｹｲｼｭNOS, 悪性奇形腫, 奇形腫, 奇形嚢胞, 成熟奇形腫, 胎児性奇形腫, 胎児腫, 類奇形腫, 奇形腫-嚢胞, 奇形腫-成熟, 奇形腫-胎児性 |
| Swedish | Teratom |
| Czech | teratom, Teratom, Teratom NOS, teratoidní tumor |
| Finnish | Teratooma |
| Russian | TERATOIDNAIA OPUKHOL', TERATOMA, TERATOMA KISTOZNAIA, EMBRIOTSITOMA, ТЕРАТОИДНАЯ ОПУХОЛЬ, ТЕРАТОМА, ТЕРАТОМА КИСТОЗНАЯ, ЭМБРИОЦИТОМА |
| Croatian | Not Translated[Teratoma] |
| Polish | Dysembryoma, Potworniak |
| Hungarian | Teratoma, Teratoma k.m.n. |
| Norwegian | Teratom |
Ontology: Dermoid cyst of ovary (C0237020)
| Definition (NCI) | A cystic teratoma that arises from the ovary. It presents as a cystic mass that contains sebaceous material admixed with hairs. In a minority of cases it is bilateral. |
| Concepts | Neoplastic Process (T191) |
| MSH | C562731 |
| SnomedCT | 119424003, 269641006, 189116006, 154618004 |
| English | Mature cystic teratoma ovary, benign dermoid cyst of ovary (diagnosis), benign dermoid cyst of ovary, Dermoid cyst of ovary, Dermoid cyst of ovary (disorder), Mature cystic teratoma of ovary (disorder), DERMOID CYST, OVARIAN, cysts dermoid ovary, cyst dermoid ovaries, cyst dermoid ovary, cysts dermoid ovarian, ovarian dermoid cyst, dermoid cyst of ovary, dermoid ovarian cyst, dermoid cyst ovary, cyst dermoid of ovary, cysts dermoid ovaries, ovarian cyst dermoid, Dermoid Cyst, Ovarian, Teratoma, Ovarian, Dermoid cyst (& [ovarian]) (disorder), Dermoid cyst (& [ovarian]), Mature cystic teratoma of ovary, Benign cystic ovarian teratoma, cyst; ovary, ovarian, dermoid, ovary; cyst, dermoid, Dermoid Cyst of Ovary, Ovarian Dermoid Cyst, Dermoid Cyst of the Ovary |
| Spanish | Quiste dermoide de ovario, teratoma quístico maduro de ovario, quiste dermoide de ovario, quiste dermoide de ovario (trastorno), teratoma quístico maduro de ovario (trastorno), teratoma ovárico quístico benigno |
| Dutch | ovariumdermoïdcyste, cyste; ovarium, ovarieel, dermoïd, ovarium; cyste, dermoïd |
| Italian | Cisti dermoide dell'ovaio |
| German | Dermoidzyste des Eierstocks |
| French | Kyste dermoïde de l'ovaire |
| Portuguese | Quisto dermóide do ovário |
| Czech | Dermoidní cysta vaječníku |
| Japanese | ﾗﾝｿｳﾙｲﾋﾉｳﾎｳｼｭ, 卵巣類皮嚢胞腫 |
| Hungarian | Ovarium dermoid cysta |
Ontology: Ovarian Teratoma (C0280131)
| Definition (NCI) | A non-seminomatous germ cell tumor arising from the ovary. It is characterized by the presence of various tissues which correspond to the different germinal layers (endoderm, mesoderm, and ectoderm). According to the level of differentiation of the tissues which comprise the tumor, ovarian teratomas are classified as mature or immature. Mature teratomas are composed of well differentiated, adult-type tissues. Immature teratomas are composed of immature, fetal type-tissues. Mature ovarian teratomas without a fetal-type component have an excellent outcome. The prognosis of immature ovarian teratomas is related to the grade and stage of the tumor. |
| Concepts | Neoplastic Process (T191) |
| SnomedCT | 319281000009108 |
| English | Ovarian Teratoma, TERATOMA, OVARIAN, teratoma ovary, ovaries teratomas, ovary teratoma, teratoma ovarian, ovary teratomas, teratoma ovarian cancer, ovarian teratomas, ovarian teratoma, Ovarian germ cell teratoma, Teratoma of ovary (disorder), Teratoma of ovary, ovarian germ cell teratoma, teratoma, ovarian germ cell, ovary; teratoma, teratoma; ovary, Germ Cell Teratoma of Ovary, Germ Cell Teratoma of the Ovary, Ovarian Germ Cell Teratoma, Teratoma of Ovary, Teratoma of the Ovary |
| Czech | Teratom ovaria z germinálních buněk |
| Dutch | ovarieel kiemcel-teratoom, ovarium; teratoom, teratoom; ovarium |
| French | Tératome germinal ovarien |
| German | Teratom der ovarialen Keimzellen |
| Hungarian | Ovarialis germinalis sejtes teratoma |
| Italian | Teratoma a cellule germinali dell'ovaio |
| Japanese | ﾗﾝｿｳﾊｲｻｲﾎﾞｳｷｹｲｼｭ, 卵巣胚細胞奇形腫 |
| Portuguese | Teratoma de células germinativas do ovário |
| Spanish | Teratoma ovárico de células germinales |
Ontology: Benign teratoma of ovary (C0346186)
| Concepts | Neoplastic Process (T191) |
| SnomedCT | 189118007, 119423009 |
| English | Benign teratoma of ovary, Benign teratoma of ovary (disorder) |
| Spanish | teratoma benigno de ovario, teratoma ovárico benigno (trastorno), teratoma ovárico benigno |
Ontology: Ovarian Cystic Teratoma (C1335155)
| Definition (NCI) | A teratoma that arises from the ovary and is characterized by the presence of cystic structures. Representative example is the dermoid cyst. |
| Concepts | Neoplastic Process (T191) |
| English | Ovarian Cystic Teratoma |
Ontology: Cystic teratoma (C1368903)
| Concepts | Neoplastic Process (T191) |
| SnomedCT | 42717009 |
| English | Cystic teratoma, NOS, Cystic teratoma, Cystic Teratoma |
| Spanish | teratoma quístico |
