Aasen S, Kolbenstvedt A
Department of Radiology, Rikshospitalet, University of Oslo, Norway.
Acta Radiol. 1992 Sep;33(5):414-9.
CT scans of 40 patients without pathology in the floor of the mouth or the submandibular glands were reviewed. Intraglandular ducts were visualized in 27 and extraglandular ducts in 3 patients. The CT appearances of dilated submandibular ducts are described in 4 patients with proven causes of obstruction. Widening of the narrow gutter between the mylohyoid and hyoglossus muscles in one scan level is a prominent feature. An intra- or extraglandular duct diameter of 3 mm or more indicates possible obstruction, and the CT images should be scrutinized to reveal the cause.
回顾了40例口腔底部或下颌下腺无病变患者的CT扫描结果。27例患者可见腺内导管，3例患者可见腺外导管。描述了4例已证实有梗阻原因的患者下颌下导管扩张的CT表现。在一个扫描层面上，下颌舌骨肌和舌骨舌肌之间狭窄沟的增宽是一个突出特征。腺内或腺外导管直径3mm或以上提示可能存在梗阻，应仔细查看CT图像以找出原因。
