title: Prenatal diagnosis of posterior mediastinal lymphangioma by two- and three-dimensional ultrasonography.
abstract: Lymphangioma is a rare benign tumor characterized by proliferating lymph vessels and composed of large cyst spaces with endothelium-lined channels of varying dimensions. The incidence of lymphangioma is approximately one in 6000 pregnancies. Less than 1% of lymphangiomas are purely mediastinal. The great majority of cases are of cystic lymphangioma, but very rarely there is a mixed lesion consisting of multiple cysts of dilated capillary and lymph vessels. We report a case of posterior mediastinal lymphangioma diagnosed at 28 weeks' gestation, in which three-dimensional ultrasonography was helpful in determining the precise location of the tumor. A Cesarean section was performed at 39 weeks and the tumor was resected on the 5(th) day postdelivery; histological examination revealed a mixed cystic lymphangioma.
authors.affiliation: Obstetrics Department, Faculty of Medicine, University of São Paulo, Brazil. rodrigoruano@hotmail.com
authors.forename: R
authors.initials: R
authors.lastname: Ruano
authors.forename: E
authors.initials: E
authors.lastname: Takashi
authors.forename: R
authors.initials: R
authors.lastname: Schultz
authors.forename: M
authors.initials: M
authors.lastname: Zugaib
mesh_terms: D000328:Adult; D002585:Cesarean Section; D005260:Female; D006801:Humans; D021621:Imaging, Three-Dimensional / Q000379:methods*; D007231:Infant, Newborn; D018191:Lymphangioma, Cystic / Q000000981:diagnostic imaging* / Q000196:embryology / Q000601:surgery; D008479:Mediastinal Neoplasms / Q000000981:diagnostic imaging* / Q000196:embryology / Q000601:surgery; D008482:Mediastinum / Q000000981:diagnostic imaging / Q000196:embryology; D011247:Pregnancy; D011263:Pregnancy Trimester, Third; D016896:Treatment Outcome; D016216:Ultrasonography, Prenatal / Q000379:methods*