dermoid cyst vs teratoma

Sebaceous material and cell debris are seen filling the cyst lumen (L). By using our website, you consent to our use of cookies. C = functional cyst. 6, Middle East Fertility Society Journal, Vol. Figure 7a. (b) On an axial contrast material-enhanced CT scan, the cyst cavity demonstrates fat attenuation (F). (b) T2-weighted MR image (7,533/84 [effective]) shows the round masses (F) floating in high-signal-intensity fluid within the cyst (arrowheads). 38, No. Figure 1d. 27, No. Although smaller mature teratomas may occur, they are uncommon. 40, No. (a) Axial T1-weighted spin-echo MR image (500/8) shows a heterogeneous mass (black arrow) with high-signal-intensity foci (white arrow). Germ cell tumors arise from the ovary’s germinal elements and make up one third of all ovarian neoplasms. Typically, the tumors are heterogeneous, partially solid lesions (,46),(,47). 51, No. (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. 93, No. 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. 24, No. (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. 3, Revista da Associação Médica Brasileira, Vol. 3, International Journal of Surgery Case Reports, Vol. Figure 11c. Mature cystic teratoma of the right ovary in a 19-year-old pregnant woman. (b) T2-weighted MR image (7,533/84 [effective]) shows the round masses (F) floating in high-signal-intensity fluid within the cyst (arrowheads). Usually found in women in the early years of adulthood, the chances of the cyst becoming malignant are extremely low. Teeth are seen in the center of the Rokitansky nodule and account for the calcification seen in b. Monodermal teratomas with neuroectodermal differentiation can form benign, ependymoma-like tumors or primitive neuroectodermal tumors (,51). Spinal dermoid cysts are uncommon overall but account for nearly 20% of intradural tumors seen in patients younger than one year of age 2. 12, Canadian Association of Radiologists Journal, Vol. (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). Endometriomas. Teratomas constitue the subgroup of germ cell tumors, and one of its subgroups is mature cystic teratomas also known as dermoid cysts. Unlike immature teratomas, mature solid teratomas are benign, corresponding to grade 0 immature teratomas. 96, Asian Pacific Journal of Cancer Prevention, Vol. Fat is reported in 93% of cases and teeth or other calcifications in 56% (,25). The hemorrhagic endometriosis (open arrow) still has high signal intensity. They are considered to be true neoplasms that arise from pluripotential stem cells that originate near the notochord. 9, No. As a noun desmoid is a desmoid tumour. Most of the hair typically arises from this protuberance. (c) Axial gadolinium-enhanced fat-saturated T1-weighted gradient-echo MR image (180/1.7) shows the loculations with lacelike enhancement (arrow). 96, No. Figure 11d. (a) Transverse transabdominal US image shows a heterogenous mass in the cul-de-sac (arrowheads). 4, 23 November 2010 | Abdominal Imaging, Vol. Blood clot within a hemorrhagic cyst can appear echogenic, although a mature cystic teratoma usually demonstrates sound attenuation rather than increased through-transmission. (c) Axial fat-saturated T1-weighted gradient-echo MR image (290/2.1) demonstrates saturation of the cyst contents (arrow). 4, Annals of Emergency Medicine, Vol. (d) Photomicrograph (original magnification, ×40; H-E stain) of the cyst wall shows squamous cells (arrowheads) lining the cyst lumen (L) as well as sebaceous glands (S) and hair follicles (arrows). (c) Fat-suppressed T1-weighted fast multiplanar spoiled gradient-echo MR image (200/3.6) shows that some of the high-signal-intensity foci in a are hemorrhagic and retain their high signal intensity (open arrowhead), whereas others represent foci of fat (solid arrowheads). (b) Transverse transabdominal US image through the midabdomen shows a larger mass containing calcifications (arrowheads).

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