Epstein-Barr virus - associated adenocarcinoma of the stomach: a rare entity with distinct characteristics.

Undifferentiated gastric carcinoma with intense lymphoid stroma has a close resemblance to nasopharyngeal lymphoepithelioma and is classified as "lymphoepithelioma- like carcinoma" (LELC). Carcinomas with morphologic features that are identical to those of nasopharyngeal lymphoepithelioma are seen in organs derived from the foregut and are designated as LELC. Most common anatomic sites are the stomach, salivary glands, lung and thymus.