The clinical and CT findings of adenolymphoma of the parotid gland

JIN Zhong-gao; WANG Xiao-ping; TIAN Ping; HE Jian; ZHU Yue-ming; ZHOU Lin-jiang

Journal of China Clinic Medical Imaging ›› 2011, Vol. 22 ›› Issue (8) : 537-540.

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The clinical and CT findings of adenolymphoma of the parotid gland

JIN Zhong-gao1, WANG Xiao-ping1, TIAN Ping2, HE Jian2, ZHU Yue-ming2, ZHOU Lin-jiang3

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Abstract

Objective: To investigate the characteristics of clinical and CT findings of adenolymphomas of the parotid gland. Methods: The clinical and CT characteristics of 10 cases of adenolymphomas of the parotid gland confirmed by pathology were studied retrospectively. Results: Seven cases were found in unilateral side(2 cases each with 2 lesions); bilateral side in 3 cases(1 case with 2 lesions in right side), altogether 16 lesions. Twelve lesions were of small size, which 10 lesions located in lower posterior and 2 in lower anterior quadrant of the parotid gland; 4 were of large size which involved multiple quadrants. Thirteen lesions were round or oval, 3 were lobulated. Thirteen lesions were well-defined, a ring of interface could be seen between the lesion and the normal tissue in which 3 lesions; the margins in 3 lesions were ill-defined, with ipsilateral parotid gland swelling and were increased in density. Lesion size was 0.6~4.8cm[(2.6±1.5)cm]. The density of the lesions were homogeneous on plain CT. Twelve were homogeneous and 4 were heterogeneous after enhancement. CT value of the lesion was (58.2±8.1)HU and (89.1±18.7)HU on plain CT and arterial phase(delayed 30s) after enhancement respectively. Four lesions were mildly, 7 were moderately and 5 were significantly enhanced. CT value of venous phase(delayed 90s) of the lesions was (92.6±16.8)HU. Small vessels could be seen in or around the lesions in 5 cases(31.3%). No enlarged cervical lymph node was noted. Conclusion: There were some characteristics of clinical and CT findings in the adenolymphomas of the parotid gland. Most cases could be correctly diagnosed before operation by analyzing the clinical and CT findings carefully.

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Lymphoma / Parotid neoplasms / Tomography / spiral computed

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JIN Zhong-gao;WANG Xiao-ping;TIAN Ping;HE Jian;ZHU Yue-ming;ZHOU Lin-jiang. The clinical and CT findings of adenolymphoma of the parotid gland[J]. Journal of China Clinic Medical Imaging. 2011, 22(8): 537-540