Benign Lymphoepithelial Lesion in the Parotid Gland; A Report of Two Cases.

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Two atypical benign lymphoepithelial lesions in the parotid gland and cervical lymphadenopathy are reported. The nonhomogeneity of the tumor echogram and the swollen neck lymph nodes strongly suggested malignancy of the parotid gland. Pathological findings of the resected parotid lesions revealed atrophy of the glandular parenchyma and epimyoepithelial islands, diagnosed as "benign lymphoepithelial lesion". The neck lymph nodes in case 1 were reactive hyperplastic lesions and in case 2 granulomatous and/or tuberculous lymphadenitis. No lymphoepithelial lesion was found in the neck lymph nodes. The relationship between the original parotid lesion and neck lymphadenopathy was not clear. Benign lymphoepithelial lesion could be approvable entity in some parotid masses even when accompanied by cervical lymphadenopathy.
耳鼻咽喉科臨床学会の論文