title: Prenatal ultrasonographic diagnosis of a sacrococcygeal teratoma in twin pregnancy.
mesh_terms: D000328:Adult; D004200:Diseases in Twins; D005260:Female; D005315:Fetal Diseases / Q000175:diagnosis*; D006801:Humans; D007231:Infant, Newborn; D008297:Male; D011247:Pregnancy; D012445:Sacrococcygeal Region; D013724:Teratoma / Q000175:diagnosis*; D014429:Twins, Dizygotic; D014463:Ultrasonography