鼻窦粘液囊肿CT表现及临床价值

CT findings in mucoceles of paranasal sinuses and the diagnostic value

目的:研究鼻窦粘液囊肿CT表现,并探讨其临床价值。方法:34例41个粘液囊肿,均经手术(或内窥镜)及病理证实,结合手术对照分析其CT表现。结果:①发生部位:主要位于额窦、筛窦,占83%(34?41)。其次为蝶窦、上颌窦。②CT表现:窦腔膨大,骨壁变薄或吸收缺损。腔内密度改变:可为低、等、高密度。周围侵蚀改变:粘液囊肿突入眶内引起眼球突出及斜视,囊肿可突入到颅内、鼻腔内。增强后表现为囊肿周边粘膜环形强化(中央无强化)。结论:CT检查能准确显示鼻窦粘液囊肿影像特征,对鼻窦粘液囊肿诊断和鉴别诊断有重要作用,对手术具有十分重要的指导意义。

Objective: To study the CT findings of mucoceles of paranasal sinuses and assess the diagnostic value. Methods: Thirty-four cases were included in this study, all proved by surgery and pathology. The CT findings of these cases were studied and compared with results of surgery and pathology. Results: ①Location: major lesions were found in frontal sinus and ethmoid sinus(3441). ②CT findings: expansion of sinus cavity and thinning of sinus wall or bony defect. Change in density: low, iso- or high density. Enhancement CT findings: ring like enhancement surrounding the central mucus. Conclusion: CT can accurately display the location and characteristic findings of mucoceles and play an important role in diagnosis and differential diagnosis. CT is an important guidance for surgery.