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目的分析腮腺腺淋巴瘤与多形性腺瘤的CT特点,探讨CT对鉴别腮腺腺淋巴瘤与多形性腺瘤的价值。方法经手术病理组织证实的15例腮腺腺淋巴瘤患者,其中男性14例,女性1例;年龄55～77岁,平均年龄62岁。经手术病理组织证实的30例多形性腺瘤患者,其中男性9例,女性21例;年龄25～55岁,平均年龄45岁。回顾性分析腮腺腺淋巴瘤和腮腺多形性腺瘤CT表现。结果 15例腮腺腺淋巴瘤中多发9(60%)例,双侧同时发现病灶12例,共发现42个病灶,39(92.9%)个病灶位于腮腺后下象限,双期增强动脉期CT值平均上升(38.5±12.8)Hu。30例腮腺多形性腺瘤中多发1/30(3.3%)例,仅1/30(3.3%)个病灶位于腮腺后下象限,双期增强动脉期CT值平均上升(15.5±9.2)Hu。结论对于中老年男性,发生于腮腺后下象限,病灶多发,内密度不均,增强后动脉期明显强化,应首先考虑为腮腺腺淋巴瘤。
Objective To analyze the CT features of parotid gland lymphoma and pleomorphic adenoma and to evaluate the value of CT in differentiating parotid adenolymphoma from pleomorphic adenoma. Methods Fifteen cases of parotid gland lymphoma confirmed by surgery and pathology, including 14 males and 1 females, aged 55-77 years (mean age 62 years). Surgical pathology confirmed 30 cases of pleomorphic adenoma patients, including 9 males and 21 females; aged 25 to 55 years, mean age 45 years. A retrospective analysis of parotid gland lymphoma and parotid pleomorphic adenoma CT findings. Results In 15 cases of parotid gland lymphoma, 9 (60%) cases were found. Twelve lesions were found in both sides. A total of 42 lesions were found, of which 39 (92.9%) were located in the posterior parotid quadrant. Average rise (38.5 ± 12.8) Hu. In 30 parotid pleomorphic adenomas, 1/30 (3.3%) cases were found frequently. Only 1/30 (3.3%) lesions were located in the posterior parotid quadrant. The average CT value of double phase enhanced arterial phase was (15.5 ± 9.2) Hu. Conclusions For middle-aged and elderly men, it occurs in the posterior subquantum of the parotid gland. Multiple lesions and uneven internal density enhance the arterial phase and should be considered as parotid adenolymph.