3, Journal of Gynecologic Surgery, Vol. Immature teratoma associated with contralateral mature cystic teratoma in a 27-year-old woman. Dermoid cyst is a mature-type teratoma containing sebaceous material and predominantly tufts of hair or teeth along with skin appendages. 31, No. Viewer. Viewer. Teratomas derived from germ cells occur in the testes in men and ovaries in women. (a) T1-weighted MR image (783/8) shows a large cyst (arrowheads) containing multiple round masses (F). Dermoid cysts are usually harmless, but in some cases, you may need to have a dermoid cyst surgically removed. Because these are solid tumors, they would be expected to be indistinguishable from solid malignancies, although necrosis is less common in the former. They are radiologically indistinguishable from immature teratomas and occur in a similar age group. Infarcted mature cystic teratoma resulting from ovarian torsion in a 73-year-old woman. 3 doctors agree. MICROSCOPIC FINDINGS Tissues from the three germ cell layers are identified with a variable admixture of mature and immature tissues, the … (a) Axial T1-weighted spin-echo MR image (repetition time msec/echo time msec = 879/14) shows a high-signal-intensity mass of the right ovary (arrow). Dermoid cysts are also called teratoma because they refer to developmentally advanced tissues in an array. 6, 5 May 2007 | Skeletal Radiology, Vol. 26, No. Figure 8a. Fluid-fluid levels result from sebum floating above aqueous fluid, which appears more echogenic than the sebum layer (,18). (a) Axial T1-weighted spin-echo MR image (897/16) shows a mass of the right ovary (arrowheads). The diagnosis of mature cystic teratoma at CT and MR imaging is fairly straightforward because these modalities are more sensitive for fat (,23). suppl_1, Revista do Hospital das Clínicas, Vol. Mature cystic teratoma in a 48-year-old woman. 5 The hemorrhagic endometriosis (open arrow) still has high signal intensity. Blood clot within a hemorrhagic cyst can appear echogenic, although a mature cystic teratoma usually demonstrates sound attenuation rather than increased through-transmission. Ovarian teratomas are mostly mature and are also known as dermoid cysts. (d) Photomicrograph (original magnification, ×40; H-E stain) shows adipose tissue within the fatty nodule.Download as PowerPointOpen in Image
(c) Axial T2-weighted MR image (5,200/98 [effective]) shows the mass with a solid appearance (arrow). Mature cystic teratoma in a 48-year-old woman. The smaller mass demonstrates low-signal-intensity “shading” (open arrow), a finding that is typical of endometrioma. Three methods can be used to distinguish the fatty contents of a mature cystic teratoma from endometriomas or other hemorrhagic cysts. 61, No. Axial gadolinium-enhanced fat-saturated T1-weighted image (736/14) shows signal suppression (arrow), suggesting presence of small fat component in cyst wall.Fatsaturated MRI or gradient-echo technique with both in-phase and opposed-phase imaging is useful to detect small amount of fatty tissue on MR images. (c) On a fat-suppressed T1-weighted gradient-echo MR image (200/2.1), the signal of the lipid material within the mass is suppressed (arrow). 7-8, 18 April 2012 | Insights into Imaging, Vol. Figure 8b. (a) T1-weighted MR image (783/8) shows a large cyst (arrowheads) containing multiple round masses (F). Mature cystic teratoma of the right ovary in a 19-year-old pregnant woman. A round Rokitansky nodule is seen (arrow) and has a feathery appearance at the fatty interface where the hair arises from it (arrowhead). (b) T2-weighted fast spin-echo MR image (6,000/126 [effective]) shows the larger mass with heterogeneous internal signal intensity and punctate high signal intensity (solid arrow). Dermoid cyst and intracystic nondependent spheres of lipid material in a 24-year-old pregnant woman. The bulk of the cyst cavity is filled with hair (arrowheads). (c) Axial fat-saturated T1-weighted gradient-echo MR image (330/2.9) demonstrates saturation of the fatty nodule (arrow). (c) On a sagittal US image, the mass has a solid appearance (arrowheads), but there is no evidence of fat. (c) Axial fat-saturated T1-weighted gradient-echo MR image (290/2.1) demonstrates saturation of the cyst contents (arrow). Figure 8c. 34, No. The patient’s α-fetoprotein level was 571 μg/L (normal, <15 μg/L). 271, No. In rare cases (1-3%), they may undergo malignant change. Monodermal teratoma (mucinous carcinoid tumor) in a 36-year-old pregnant woman. (d) High-power photomicrograph (original magnification, ×100; H-E stain) of the mass shows extensive mucin (M) surrounding carcinoid tumor cells. (d) Photomicrograph (original magnification, ×40; H-E stain) shows adipose tissue within the fatty nodule. (b) Axial fat-saturated T1-weighted gradient-echo MR image (150/1.7) demonstrates saturation of the high-signal-intensity foci within the mass (arrow), a finding that indicates fat. 17, No. 12, Magnetic Resonance Imaging Clinics of North America, Vol. - negative for malignancy. (b) On an axial contrast material-enhanced CT scan, the cyst cavity demonstrates fat attenuation (F). Dermoid cyst and intracystic nondependent spheres of lipid material in a 24-year-old pregnant woman. Figure 1c. 6, Journal of Evolution of Medical and Dental sciences, Vol. Mature cystic teratoma in a 48-year-old woman. 10, Gastroenterology Clinics of North America, Vol. Struma ovarii and carcinoid tumors are monodermal teratomas and do not demonstrate fat. (a) Axial T1-weighted spin-echo MR image (600/16) shows two high-signal-intensity masses of the right ovary (arrows). A lesion with the typical appearance of a mature cystic teratoma lies adjacent to the mass (arrow). 6, Middle East Fertility Society Journal, Vol. Immature teratoma associated with ipsilateral mature cystic teratoma in a 27-year-old woman. 22, No. A mature teratoma often contains several different types of tissue such as skin, muscle, and bone. A dermoid cyst is a developmental anomaly characterised by an accumulation of keratin, hair and variable amounts of sebum within a cyst lined by keratinised stratified squamous epithelium and adnexal skin structures (eg, hair follicles, sebaceous glands, sweat glands). 10 MCTs occur most commonly during the reproductive years, but they may be encountered at any age, 39, No. Viewer, Multimodality Imaging Approach to Ovarian Neoplasms with Pathologic Correlation, Mucinous Neoplasms of the Ovary: Radiologic-Pathologic Correlation, Squamous cell carcinoma arising from mature cystic teratoma of the ovary: A challenging question for gynecologic oncologists, Metastatic Endocervical Adenocarcinoma in a Mature Cystic Teratoma, Endometriosis revisited: an imaging review of the usual and unusual manifestations with pathological correlation, Malignant tumors in autoimmune encephalitis with anti-NMDA receptor antibodies, Magnetic resonance imaging of pediatric adnexal masses and mimics, Occult teratoma in a case of N-methyl-D-aspartate receptor encephalitis, Mature ovarian cystic teratoma with disseminated nodular lesions in the pleural and peritoneal cavities: A case report, Pitfalls of diffusion-weighted imaging of the female pelvis, Advanced Imaging Techniques Used in the Infertile Female, Mesenchymal endometrial stem/stromal cells for hard tissue engineering: a review of
(b) T2-weighted fast spin-echo MR image (6,000/126 [effective]) shows the larger mass with heterogeneous internal signal intensity and punctate high signal intensity (solid arrow). Two molar teeth are also evident (arrows). (d) High-power photomicrograph (original magnification, ×100; H-E stain) of the mass shows extensive mucin (M) surrounding carcinoid tumor cells. C = functional cyst. —33-year-old woman with mature cystic teratoma without fat in cystic cavity. Good luck and hope that it is benign! Viewer. (a) Transverse transabdominal US image shows a heterogenous mass in the cul-de-sac (arrowheads). 17, No. What is Immature Teratoma? 30, No. 4, Critical Reviews in Oncology/Hematology, Vol. 6, 10 November 2014 | RadioGraphics, Vol. C = functional cyst. (d) Photomicrograph (original magnification, ×40; H-E stain) of the large mass shows immature neural tissue (N), bone (B), and cartilage (C). To learn more, please visit our. Small foci of fat within the solid component may be difficult to recognize. Dermoid cyst is the most common teratoma of the ovary, but is extremely rare in the testis. A dermoid cyst is a mature cystic teratoma containing hair (sometimes very abundant) and other structures characteristic of normal skin and other tissues derived from the ectoderm Ovarian dermoid cyst and mature cystic ovarian teratoma are terms often used interchangeably to refer to the most common ovarian neoplasm. 93, No. C = functional cyst. Ovarian teratomas include mature cystic teratomas (dermoid cysts), immature teratomas, and monodermal teratomas (eg, struma ovarii, carcinoid tumors, neural tumors). teratoma/dermoid cyst) and choristoma is thin. Mature cystic teratomas arise from a single germ cell after the first meiotic division (,10). The smaller mass demonstrates low-signal-intensity “shading” (open arrow), a finding that is typical of endometrioma. Ovaian teratomas are almost always benign. (b) T2-weighted fast spin-echo MR image (6,000/105 [effective]) shows some of the cyst loculations with very low signal intensity (arrows). Dermoid Cyst of the Parotid Gland: Report of a Rare Entity with Literature Review, Gastric teratoma in children: Our experience, Differentiation of Benign from Malignant Adnexal Masses by Functional 3 Tesla MRI Techniques: Diffusion-Weighted Imaging and Time-Intensity Curves of Dynamic Contrast-Enhanced MRI, Tumeurs ovariennes de l’enfant et de l’adolescente : à propos d’une série de 41 cas, Malignant Transformation Rate and P53, and P16 Expression in Teratomatous Skin of Ovarian Mature Cystic Teratoma, Tératome immature ovarien chez une patiente de 38ans : intérêt de l’IRM pelvienne préopératoire, Ovarian tumors in children and adolescents: A series of 41 cases, Growing Teratoma Syndrome: First Case Report in a 4-Year-Old Girl, Struma ovarii accompanied by mature cystic teratoma of the other ovary: A case report and literature review, Algorithmic approach to solid adnexal masses and their mimics: utilization of anatomic relationships and imaging features to facilitate diagnosis, Review of Ovarian Tumors in Children and Adolescents: Radiologic-Pathologic Correlation, Multicomponent analyses of a hydatid cyst from an Early Neolithic hunter–fisher–gatherer from Lake Baikal, Siberia, An unexpected mass of the urachus: a case report, Bilateral Malignant Ovarian Teratoma With Peritoneal Metastasis in a Captive African Pygmy Hedgehog (Atelerix albiventris), Parvovirus B19 Persistence in Abnormal Thyroid Tissue of a Mature Cystic Ovarian Teratoma: A Case Report, The Recurrence Rate of Ovarian Dermoid Cysts in Pediatric and Adolescent Girls, Ovarian teratoma in an equine fetus: a case report, Ovarian Malignant Germ Cell Tumors: Cellular Classification and Clinical and Imaging Features, A floating ball: a pathognomonic sign of ovarian cystic teratoma, Abdominal and Pelvic Tumors With Musculoskeletal Histology, The Additional Value of Attenuation Correction CT Acquired During 18F-FDG PET/CT in Differentiating Mature From Immature Teratomas, Woman with Right Lower Quadrant Mass and Abdominal Pain, Two cases of Immature Teratoma Discovered after Emergency Laparoscopic Surgery for an Acute Abdomen, Three Cases of Immature Teratoma Diagnosed after Laparoscopic Operation, Échographie et doppler dans le diagnostic des tumeurs ovariennes présumées bénignes, Magnetic Resonance Imaging of Pediatric Pelvic Masses, Value of dynamic contrast-enhanced MRI for tissue characterization of ovarian teratomas: Correlation with histopathology, Characteristics and Treatment Outcomes of Patients with Malignant Transformation Arising from Mature Cystic Teratoma of the Ovary: Experience at a Single Institution, Effect of dentine matrix proteins on human endometrial adult stem-like cells: In vitro regeneration of odontoblasts cells, Incidental Scintigraphic Finding of Ovarian Teratoma Containing Normal Thyroid Tissue on Post–Radioactive Iodine Therapy for Papillary Thyroid Cancer, Gastric Teratoma in an Infant: A Rare Case Report and Discussion, Suspected Extracolonic Neoplasms Detected on CT Colonography, Current MR Imaging Lipid Detection Techniques for Diagnosis of Lesions in the Abdomen and Pelvis, Ovarian Teratoma Mimicking Metastasis on I-131 Scan : A Case Report, Ectopic Teeth in Ovarian Teratoma: A Rare Appearance, H
4, Journal de Radiologie Diagnostique et Interventionnelle, Vol. 6, 22 August 2006 | Archives of Gynecology and Obstetrics, Vol. The prognosis is generally poor for such malignant tumors. Two molar teeth are also evident (arrows).Download as PowerPointOpen in Image
(d) Struma ovarii. 52, No. Figure 6b. 5, 23 May 2014 | Abdominal Imaging, Vol. The third manifestation consists of multiple thin, echogenic bands caused by hair in the cyst cavity (,,,,,Fig 3). Photomicrograph (original magnification, ×40; H-E stain) of a specimen from a different patient shows thyroid follicles containing thick colloid (C).Download as PowerPointOpen in Image
Most importantly, do you have symptoms? (d) CT scan through the abdominal mass shows an immature teratoma (arrowheads) with foci of fat (arrow) and scattered calcifications.Download as PowerPointOpen in Image
(c) Axial T2-weighted MR image (5,200/98 [effective]) shows the mass with a solid appearance (arrow). (b) T2-weighted fast spin-echo MR image (6,000/126 [effective]) shows the larger mass with heterogeneous internal signal intensity and punctate high signal intensity (solid arrow). Discuss the histologic characteristics and specific US, CT, and MR imaging features of the various types of ovarian teratomas. (a) Axial T1-weighted spin-echo MR image (600/16) shows two high-signal-intensity masses of the right ovary (arrows). 27, No. (b) T2-weighted fast spin-echo MR image (6,000/126 [effective]) shows the larger mass with heterogeneous internal signal intensity and punctate high signal intensity (solid arrow). (d) Photomicrograph (original magnification, ×40; hematoxylin-eosin [H-E] stain) of the cyst wall shows squamous cell lining (arrowheads), sebaceous glands (arrow), and intervening muscle. Immature teratoma associated with ipsilateral mature cystic teratoma in a 27-year-old woman. (d) Photograph of the gross specimen shows yellowish, pasty sebaceous material (black arrowhead) and hair (white arrowheads) within the cyst cavity, findings that account for the fat echogenicity and signal intensity seen at US and MR imaging. Figure 10d. 15, No. Epidermoid cyst. 32, No. 2, Korean Journal of Radiology, Vol. Figure 10d. 49, No. Mature cystic teratoma in a 48-year-old woman. (b) Axial fat-saturated T1-weighted gradient-echo MR image (150/1.7) demonstrates saturation of the high-signal-intensity foci within the mass (arrow), a finding that indicates fat. (a) Axial T1-weighted spin-echo MR image (600/16) shows two high-signal-intensity masses of the right ovary (arrows). Mature cystic teratoma of the right ovary in a 19-year-old pregnant woman. Testicular teratomas account for 40% of testicular cancers. 6, Journal of Medical Imaging and Radiation Oncology, Vol. (a) Axial T1-weighted spin-echo MR image (897/16) shows a mass of the right ovary (arrowheads). 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