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© 2002 by the American Institute of Ultrasound in Medicine
J Ultrasound Med 21:775-781 • 0278-4297

Image Presentation

Three-dimensional Ultrasonographic Presentation of Micrognathia

Wesley Lee, MD, Beverley McNie, Tinnakorn Chaiworapongsa, MD, Giancarlo Conoscenti, MD, Karim D. Kalache, MD, Ivana M. Vettraino, MD, Roberto Romero, MD and Christine H. Comstock, MD

Division of Fetal Imaging, Department of Obstetrics and Gynecology, William Beaumont Hospital, Royal Oak, Michigan (W.L., B.M., I.M.V., C.H.C.); and Perinatology Research Branch, National Institute of Child Health and Human Development, Wayne State University, Detroit, Michigan (W.L., T.C., G.C., K.D.K., R.R.).

Address correspondence and reprint requests to Wesley Lee, MD, Division of Fetal Imaging, Department of Obstetrics and Gynecology, William Beaumont Hospital, 3601 W Thirteen Mile Rd, Royal Oak, MI 48073-6769.

Objective. To present the variable appearance of micrognathia in fetuses by three-dimensional ultrasonography and to describe practical methods for analysis of these volume data. Methods. Three-dimensional multiplanar imaging and surface-rendering techniques were used to show various syndromes and diagnostic approaches for the evaluation of fetal micrognathia. Results. Nine cases of fetal micrognathia are presented. Orthogonal multiplanar views were used to obtain a midsagittal facial profile. Examples of micrognathia include 3 cases of Pierre Robin sequence, cerebrocostomandibular syndrome, Cornelia de Lange syndrome, and hypochondrogenesis. Diagnostic pitfalls for micrognathia are also shown. Conclusions. Three-dimensional multiplanar imaging increases the likelihood that a true midline sagittal view of the facial profile is being analyzed. Surface rendering provides another way to qualitatively evaluate the fetal chin from different viewing perspectives. Three-dimensional ultrasonographic methods are useful adjuncts to the preliminary diagnostic impression from two-dimensional ultrasonography.

Key Words: fetus • micrognathia • prenatal diagnosis • three-dimensional ultrasonography.

Abbreviations: 3D, three-dimensional • 3DUS, three-dimensional ultrasonography • 2D, two-dimensional • 2DUS, two-dimensional ultrasonography




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Copyright © 2002 by the American Institute of Ultrasound in Medicine.