title: Radiologic appearance of the upper cervical canal in women with a history of premature delivery.
abstract: The aim of this study was to compare the radiologic appearance of the upper cervical canal at hysterography between a group of women with a history of premature delivery and a control group. A standardized technique was used that corrects for the magnification inherent in taking measurements directly from the x-ray films. Some women with a history of premature delivery had abnormally wide upper cervical canals in the nonpregnant state. Premature labor might not have been an acute pregnancy-specific event in those women but might have been a reflection of an underlying abnormality.
mesh_terms: D002584:Cervix Uteri / Q000000981:diagnostic imaging* / Q000473:pathology; D005260:Female; D006801:Humans; D007752:Obstetric Labor, Premature / Q000209:etiology*; D011247:Pregnancy; D011859:Radiography