CT of Low Density Lesions in the Neck

頸部低密度病變的電腦斷層影像

吳昭瑩(Chau-Ying Wu) ； 廖漢文(Hon-Man Liu) ； 黃國茂(Kou-Mou Huang) ； 徐劍耀(Jane Chien-Yao Hsu) ； 蘇誠道(Cheng-Tau Su)

《中華放射線醫學雜誌》 17卷1期 (1992/03) Pp. 49-56

摘要

頸部腫瘤在電腦斷層影像上，以低密度為主要特徵的，較不常見。回顧過去所做的頸部電腦斷層攝，發現有四十五例是屬於低密度病變，依據這些病變的衰減程度；彼等有否邊綠加強以及其均勻以作鑑別診斷。大多數先天性病變位於中間或是中線旁，合併有或無邊緣加強，例如：甲狀舌管囊腫、鰓裂囊腫、囊性水腫，皮樣囊腫、脂肪瘤和喉氣囊。至於那些有異質性加強的病變，通常屬於後天性疾病，例如：舌下囊腫、淋巴瘤、神經鞘瘤、腮腺瘤、轉移性淋巴結、結核性淋巴腺炎等。

關鍵字

頸部電腦斷層攝影 ； 甲狀舌管 ； 囊腫或囊腫樣病灶

並列摘要

In CT, manifestation of neck mass mainly as low density was uncommon. We reviewed 45 cases in which CT studies revealed low density lesions in the neck. They were analyzed according to density (water, fat or air), rim enhancement and homogeneity for further differentiation. Most congenital lesions such as thyroglossal duct cyst (TGDC), branchial cleft cyst (BCC), cystic hygroma, dermoid cyst, lipoma and laryngocele were found in the midline or paramedian with or without rim enhancement. Those with heterogeneous enhancement were often of acquired etiology, such as ranula, lymphoma, neurilemmoma, parotid adenoma, metastatic nodes and tubercubus adenitis, etc.

並列關鍵字

neck, CT ； cyst or cystic lesions ； thyrogbossal duct