An uncommon sonographic pattern was observed in 2 dermoid cysts. An echogenic upper and an echo-free dependent component were separated by a horizontal delineation, an observation that could be reproduced in a laboratory model. We believe that this finding is pathognomonic for a dermoid cyst.
FeldbergM. A. M.van WaesP. F. G. M.HendriksM. J.: Direct multiplanar CT findings in cystic teratoma of the ovary. J. Comput. Assist. Tomogr.6 (1984), 1131.
4.
FriedA. M.WoodringJ. H.LohF. K.: Ovarian dermoid. Side by side presentation of the sonographic differential diagnosis. Med. Radiogr. Photogr.61 (1985), 32.
5.
HuttonL.RankinR.: The fat-fluid-level. Another feature of dermoid tumors of the ovary. J. Clin. Ultrasound7 (1979), 215.
6.
LaingF. C.van DalsemV. F.MarksW. M.BartonJ. L.MartinezD. A.: Dermoid cysts of the ovary. Their ultrasonographic appearances. Obstet. Gynecol.57 (1981), 99.
7.
MoyleJ. W.RochesterD.SiderL.ShrockK.KrauseP.: Sonography of ovarian tumor. Predictability of tumor type. AJR141 (1983), 985.
8.
SandlerM. A.SilverT. M.KaroJ. J.: Gray-scale ultrasonic features of ovarian teratomas. Radiology131 (1979), 705.
9.
ShethS.FishmanE. K.BuckJ. L.HamperU. M.SandersR. C.: The variable sonographic appearances of ovarian teratomas. Correlation with CT. AJR151 (1988), 331.
10.
SkaaneP.HuebnerK.-H.: Computed tomography of cystic ovarian teratomas with gravity-dependent layering. J. Comput. Assist. Tomogr.5 (1983), 837.
11.
SkaaneP.JerveF.: Fett-væskespeil (”fat-fluid-level”) i dermoidcyste. (In Norwegian.)Tidsskr. Nor. Lægeforen.106 (1986), 2243.
