腮腺炎与腮腺肿瘤的CT评价

目的 :探讨 CT对腮腺疾病的诊断价值。方法 :回顾性分析 4 1例 (2 3例炎症 ,18例肿瘤 )经病理及临床证实的腮腺炎及腮腺肿瘤的 CT征象。结果 :炎症多为双侧性 (17例 ) ,肿瘤单侧多见 (18例 ) ,弥漫性炎症密度均匀 ,恶性肿瘤密度不均匀 ;边缘清楚者 30例 ,边缘模糊者 11例 ,增强后炎症轻度均匀强化 ,混合瘤中度以上均匀强化 ,恶性肿瘤不均匀强化并伴有邻近组织的侵犯和骨质破坏。结论 :CT检查能够对大多数的腮腺炎症及肿瘤作出正确的诊断并能准确定位 ,病灶边界模糊不清是诊断恶性肿瘤的一个重要征象 ,但对于良性肿瘤和炎性病变的鉴别有限度。

CT Evaluation of Parotitis and Parotid Tumor

Objective To evaluate the values of CT diagnostic in parotid disease. Methods CT finding of the 23 parotitis cases and 18 parotid tumors cases proved by pathology was analysed restrospectivety statistically. Result Most of parotitis appeqred in both side(17 Cass), all of the parotid tumors were in unilateral patorid. Diffuse parotitis were homogenous density and malignant tumors were beterogeneous density. The margins of lesions were showed clearly in 30 cases, ill-defined in 11 Cases. After injecting contrast material, protitis was mild enhancement homogeneously but benign tumors markedly. There were heterogeneous enbancement and infiltration of adjacent tissue and bony destruction might be seen in malignant tumors. Conclusion CT examination can make an exact diagnosis to most of the parotitis and parotid tumors and location of parotid lesion. The ill-defined margin and infiltration of mass is helpful feature in predicting malitnant lesion, but there is limitation in distinguishing between a non-tumor lesion and a benign tumor.