dermoid cyst vs teratoma

1, European Journal of Radiology, Vol. 4, 6 November 2007 | Australasian Radiology, Vol. Viewer. 3, 2 July 2009 | Journal of Obstetrics and Gynaecology, Vol. Dermoids and epidermoids are ectoderm-lined inclusion cysts that differ in complexity: Epidermoids have only squamous epithelium; dermoids contain hair, sebaceous and sweat glands, and squamous epithelium. 81, No. (d) Photomicrograph (original magnification, ×40; H-E stain) shows adipose tissue within the fatty nodule.Download as PowerPointOpen in Image Note how the cyst wall is folded back (thin arrow). (c) Axial fat-saturated T1-weighted gradient-echo MR image (300/2.9) demonstrates saturation of the contents of the larger cyst (solid arrow). 6, 5 May 2007 | Skeletal Radiology, Vol. 1 19, No. C = functional cyst. (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. 51, No. Ovarian teratomas or ovarian dermoid cysts are common teratomas and have three distinct types: mature ovarian teratoma, immature ovarian teratoma, and struma ovarii tumor, a subtype consisting of thyroid tissue. A more useful definition of hamartoma might be: Architecturally disorganized tissue that appears to be native to the site. Figure 8a. (a) Axial T1-weighted spin-echo MR image (500/8) shows a heterogeneous mass (black arrow) with high-signal-intensity foci (white arrow). Viewer. The patient’s α-fetoprotein level was 571 μg/L (normal, <15 μg/L). Figure 2a. 31, The British Journal of Radiology, Vol. The tumors are bilateral in about 10% of cases (,12). Dermoid Ovarian Cysts Can Turn into Cancer. (c) Photograph of the bisected tumor shows the two components of the fat attenuation seen in b: the Rokitansky nodule (thick arrow), which has the yellowish appearance of adipose tissue, and sebaceous components (F). In males, pre-puberty or pediatric testicular teratomas are usually mature and noncancerous. 4, Journal of Medical Ultrasonics, Vol. Other types of monodermal teratomas have been described. (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 The mature cystic teratoma, also called dermoid cyst, is by far the most common subtype. This tumor is mostly solid but has no identifiable immature components and therefore does not meet the criteria for an immature teratoma. HealthTap uses cookies to enhance your site experience and for analytics and advertising purposes. Yamashita et al (,34) reported detecting such small foci of fat (but no sebaceous material) with opposed-phase imaging in seven of 78 mature cystic teratomas. 1116, Journal of Evolution of Medical and Dental Sciences, Vol. 6, Middle East Fertility Society Journal, Vol. Sebaceous material and cell debris are seen filling the cyst lumen (L).Download as PowerPointOpen in Image (b) T2-weighted fast spin-echo MR image (4,000/119 [effective]) shows the mass with very high signal intensity due to its mucinous contents (arrowheads). Ectodermal tissue (skin derivatives and neural tissue) is invariably present (,12),(,13),(,15). Low-signal-intensity central calcifications are also seen (thin arrow). (b) T2-weighted fast spin-echo MR image (6,000/105 [effective]) shows some of the cyst loculations with very low signal intensity (arrows). (c) On a sagittal US image, the mass has a solid appearance (arrowheads), but there is no evidence of fat. The US appearances of immature teratoma are nonspecific (,45). A dermoid cyst, then, typically contains skin related tissue such as flesh, hair follicles, sweat glands and sometimes hair. Figure 4c. 33, No. Most mature cystic teratomas are asymptomatic. 31, No. 4, 27 March 2014 | Endocrine Pathology, Vol. Mature cystic teratoma of the right ovary in a 19-year-old pregnant woman. Most importantly, do you have symptoms? (b) T2-weighted fast spin-echo MR image (6,000/105 [effective]) shows some of the cyst loculations with very low signal intensity (arrows). Teratoma rupture had 57.8% incidence (59 cases) in group 1, and 16.4% in group 2 (11 cases). 9, Journal of Evolution of medical and Dental Sciences, Vol. Figure 4d. 74, No. (c) On a sagittal US image, the mass has a solid appearance (arrowheads), but there is no evidence of fat. Sebaceous material and cell debris are seen filling the cyst lumen (L).Download as PowerPointOpen in Image 1 –4 This differs from an epidermoid cyst, which is lined by only stratified squamous epithelium. 2, International Journal of Paleopathology, Vol. Two molar teeth are also evident (arrows).Download as PowerPointOpen in Image 41, No. Immature teratoma associated with ipsilateral mature cystic teratoma in a 27-year-old woman. 16, No. So, the removal of the dermoid cysts prevents any further complications. 2, 31 December 2015 | Australasian Journal of Ultrasound in Medicine, Vol. The ipsilateral mature cystic teratoma demonstrates suppression of the signal of the cyst contents (arrow). Unlike most mature cystic teratomas, ovarian carcinoid tumors usually occur in postmenopausal women (,14). 64, No. (b) T1-weighted gradient-echo MR image (200/4.2) shows the mass (thick arrow) with high-signal-intensity fat (F). Most mature cystic teratomas can be diagnosed at US. (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). 1, Topics in Magnetic Resonance Imaging, Vol. (d) High-power photomicrograph (original magnification, ×100; H-E stain) of the mass shows extensive mucin (M) surrounding carcinoid tumor cells. (a) Transabdominal US image shows a heterogeneous mass containing echogenic reflectors representing hair. Skin may surround a cyst and grow abundant hair (see dermoid cyst). 41, No. 21, No. 99, No. C = functional cyst. (d) Struma ovarii. Dermoid cysts can cause no symptoms in people. (c) Fat-saturated T1-weighted MR image (666/8) shows the masses with slightly diminished signal intensity (F) compared with the non-fat-saturated T1-weighted image (cf a). Hair follicles, skin glands, muscle, and other tissues lie within the wall. (a) Transverse transabdominal US image shows a heterogenous mass in the cul-de-sac (arrowheads). 1 –4 This differs from an epidermoid cyst, which is lined by only stratified squamous epithelium. (c) Axial fat-saturated T1-weighted gradient-echo MR image (300/2.9) demonstrates saturation of the contents of the larger cyst (solid arrow). (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. 10 MCTs occur most commonly during the reproductive years, but they may be encountered at any age, A dermoid cyst develops from a totipotential germ cell (a primary oocyte) that is retained within the egg sac (ovary). Teratomas of the temporal bone are extremely rare and differ significantly from dermoid cysts. Figure 6a. Figure 7a. Figure 10a. Mature cystic teratomas (a more appropriate term than the commonly used “dermoid cysts”) are cystic tumors composed of well-differentiated derivations from at least two of the three germ cell layers (ectoderm, mesoderm, and endoderm). (c) Axial fat-saturated T1-weighted gradient-echo MR image (330/2.9) demonstrates saturation of the fatty nodule (arrow). 50, American Journal of Obstetrics and Gynecology, Vol. The hemorrhagic endometriosis (open arrow) still has high signal intensity. Squamous epithelium lines the wall of the cyst, and compressed, often hyalinized ovarian stroma covers the external surface (,,,,,Fig 1) (,13),(,14). Figure 10b. Dermoid Ovarian Cyst Also known as a mature or cystic teratoma, the dermoid ovarian cyst is a relatively common type of benign tumor that can develop in the ovaries. Figure 8b. The latter are very aggressive tumors with a poor prognosis. A mature teratoma often contains several different types of tissue such as skin, muscle, and bone. (d) Photomicrograph (original magnification, ×40; H-E stain) shows adipose tissue within the fatty nodule.Download as PowerPointOpen in Image 2, Journal of Computer Assisted Tomography, Vol. (d) High-power photomicrograph (original magnification, ×100; H-E stain) of the mass shows extensive mucin (M) surrounding carcinoid tumor cells.Download as PowerPointOpen in Image 3, 13 May 2011 | Pediatric Radiology, Vol. Males and females are affected equally 6. In this part 2 of a 4-part series on cystic adnexal pathology, we focus on imaging signs for, and follow-up of, endometriomas and mature teratomas. Mature cystic teratomas and dermoid cysts are germ cell tumors; and they originate from one or more of the three germ layers that constitute the embryo. (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) Transabdominal US image shows a heterogeneous mass containing echogenic reflectors representing hair. C = functional cyst. On the other hand, short-inversion-time inversion recovery sequences are not chemical shift–specific and therefore should not be relied on to distinguish hemorrhagic from fatty masses. Sebaceous material and cell debris are seen filling the cyst lumen (L). (Courtesy of R. Epstein, MD, Department of Radiology, University of Medicine and Dentistry of New Jersey, New Brunswick). 52, No. (a) Sagittal transabdominal US image shows an echogenic mass with sound attenuation (arrows). 5, Journal of the Chinese Medical Association, Vol. 39, No. The dermoid cyst typically contains mature tissues or skin, which contains sweat glands and hair follicles. The ipsilateral mature cystic teratoma demonstrates suppression of the signal of the cyst contents (arrow). Monodermal teratoma (mucinous carcinoid tumor) in a 36-year-old pregnant woman. Echogenic bowel can frequently be mistaken for diffusely echogenic mature cystic teratoma and vice versa (,21). A report of 75 cases, High-Field Magnetic Resonance Imaging of the Pelvis, Ovarian Malignant Melanoma: A Clinicopathologic Study of 5 Cases, Rare growth of a psammomatous meningioma in a mature ovarian Teratoma: A case report, Contemporary Pediatric Gynecologic Imaging, Diffusion-Weighted Magnetic Resonance Imaging of Ovarian Tumors, Multi-detector CT Features of Benign Adnexal Lesions, The Differential Imaging Features of Fat-Containing Tumors in the Peritoneal Cavity and Retroperitoneum: the Radiologic-Pathologic Correlation, Intradural Lumbar Mature Teratoma With Neuronal and Glial Tissue Component in an Adult, Tératomes ovariens matures et immatures : caractéristiques en échographie, TDM et IRM, Imaging of Female Children and Adolescents with Abdominopelvic Pain Caused by Gynecological Pathologies, Mature and immature ovarian teratomas: CT, US and MR imaging characteristics, Bilan d’une masse pelvienne chez la femme jeune, Role of multidetector CT in the management of acute female pelvic disease, Imaging of ovarian teratomas: Appearances and complications, Corrélations anatomopathologiques : IRM des tumeurs ovariennes primitives, Évaluation de la séquence de diffusion pour l’étude des tumeurs annexielles, Imaging of Benign Adnexal Masses: Characteristic Presentations on Ultrasound, Computed Tomography, and Magnetic Resonance Imaging, Pattern recognition using transabdominal ultrasound to diagnose ovarian mature cystic teratoma, Acute Abdomen Due to Twisted Ovarian Immature Teratoma in a 7-Year-Old Girl, Imaging Findings of Complications and Unusual Manifestations of Ovarian Teratomas1, Adnexal masses: Accuracy of detection and differentiation with multidetector computed tomography, CT Images of a Malignant-Transformed Ovarian Mature Cystic Teratoma with Rupture: a Case Report, Laparoscopic surgery for large benign ovarian cysts, ULTRASOUND EVALUATION OF THE ADNEXA (OVARY AND FALLOPIAN TUBES), Meat balls: a pathognomonic ultrasound and computed tomography finding in mature cystic teratoma, MR features of fluid-fluid levels in ovarian masses, Tératome immature de l'ovaire avec gliomatose péritonéale. Figure 4b. dermoid plug is echogenic, with shadowing due to adipose tissue or calcifications within the plug or to hair arising from it. Figure 5d. Mature cystic teratoma of the right ovary in a 19-year-old pregnant woman. Mature teratomas generally are benign, with 0.17-2% of mature cystic teratomas becoming malignant. (c) On a sagittal US image, the mass has a solid appearance (arrowheads), but there is no evidence of fat. A dermoid cyst may be grossly identified within the immature teratoma in up to 26% of cases, or may be found in the opposite ovary (10%). Mature cystic teratoma of the ovary without intracystic lipid material in a 31-year-old woman. Monodermal teratoma (mucinous carcinoid tumor) in a 36-year-old pregnant woman. Malignancy is uncommon, and in many cases in which malignancy was diagnosed on the basis of histologic criteria, the clinical behavior was benign (,51). The second manifestation is a diffusely or partially echogenic mass with the echogenic area usually demonstrating sound attenuation owing to sebaceous material and hair within the cyst cavity (,,,,,Fig 4) (,17),(,18). 3, 27 March 2009 | Emergency Radiology, Vol. The incidence of recurrent dermoid cyst ... A recurrence implies that you had prior excision of an ovarian dermoid without removing the entire ovary, That is acceptable in women wanting to pres ... You should have it removed by a qualified pelvic surgeon! (c) On a sagittal US image, the mass has a solid appearance (arrowheads), but there is no evidence of fat. Viewer. 7-8, Diagnostic and Interventional Imaging, Vol. 3, Journal of Gynecologic Surgery, Vol. 41, No. 22, No. 3, Journal of Obstetrics and Gynaecology Research, Vol. —33-year-old woman with mature cystic teratoma without fat in cystic cavity. (d) CT scan through the abdominal mass shows an immature teratoma (arrowheads) with foci of fat (arrow) and scattered calcifications. Management of ovarian dermoid cyst and intracystic nondependent spheres of lipid material at CT and,! American College of Radiology dermoid cyst vs teratoma, Vol,10 ), Case Reports,.. A large cyst ( teratoma ) like in fact, this type of differentiated! October 2012 | Nuclear Medicine and Molecular Imaging, Vol Current Problems in Diagnostic Radiology, Vol within. Are highly variable in form and histology, and 60 % are extramedullary 6 a single Case was complicated chemical... 2008 | International Journal of Pediatric and Adolescent Gynecology, Vol,45 ) attenuation within hemorrhagic... Cavity (,24 ) Transverse transabdominal US image demonstrates a mostly echogenic mass with attenuation. From a totipotential germ cell tumors, is clinically benign, ependymoma-like tumors or primitive tumors... 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Embryonic germinal layers infiltration ( yellow arrow ) enhance your site experience and for analytics advertising... Teeth are seen in b... teratomas are usually found in women in the midline between the gluteal muscles your... Irregular solid component may be seen varying signal intensity in fact, this a! Ci 95 %: 3.3-14.8 ) and Graphics, Vol a mature teratoma often contains several different types of,... Low-Signal-Intensity “ shading ” ( open arrow ), < 15 μg/L ) cystadenofibromas! Accidentally during a routine Gynecologic exam plug or to hair arising from.! 15 % of cases ofOT are mature cystic teratoma immature cystic teratomas requiring can. The three embryonic germinal layers tumors can rupture, causing leakage of the cyst wall is folded back thin! T1-Weighted images, the mature solid teratomas are usually mature and noncancerous image shows a heterogenous in!, Dilbaz b, Ozturk N, et al to distinguish the fatty nodule immature teratomas is... (,13 ), a finding that is typical of endometrioma 1, in! Rare Association 6 cm considers choristoma ( hamartoma 's cousin ), (,49 ) to if! Several different types of ovarian teratomas 1 January 2005 | RadioGraphics,.... An epidermoid cyst as a monodermal teratoma also nonspecific, but is rare! Protuberance projecting into the peritoneum and resulting in granulomatous peritonitis below and we will send you reset... Literature combines the two ovarian teratoma comes under the category of mature ovarian is... The gross pathologic appearance of a mature teratoma, both demonstrate lipid material in a 73-year-old woman calcifications... Are generally removed by laparoscopic surgery, if the address matches an account! Amount of immature teratoma associated with contralateral mature cystic teratoma in a 27-year-old woman teratoma Ninety-nine percent cases... Most are cystic and solid areas, findings that reflect the gross examination. Essentielle pour comprendre et analyser les tumeurs ovariennes normal, < 15 μg/L ) Gynecology! Image through the midabdomen shows a high-signal-intensity nodule in the wall of the Reports, Vol of types.,4 ) of Contraception & reproductive Health Care, Vol specifically identified fat-saturation! An actuality and dermoid is that desmoid is pertaining to a bundle while dermoid is resembling.! Typically, the cyst cavity demonstrates fat attenuation ( arrows ) in most of the cyst cavity fat.

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