Pathology consultation. Carcinoma ex lymphoepithelial lesion

Carcinoma ex lymphoepithelial lesion is a poorly differentiated, nonkeratinizing carcinoma presumably arising from the epimyoepithelial islands of the lymphoepithelial lesion of the major salivary glands. Parotid origin dominates the statistics concerning site of origin. There is no relationship of the carcinoma to systemic rheumatic disease or Sjögren's syndrome.