title: Relationship between Epstein-Barr virus and lymphoepithelioma-like carcinoma of the lung: a clinicopathologic study of 6 cases and review of the literature.
abstract: Lymphoepithelioma-like carcinoma (LELC) is a rare form of lung cancer, usually encountered in Chinese patients. Similar to nasopharyngeal carcinoma, LELC of the lung is strongly associated with Epstein-Barr virus (EBV) infection in Asian patients, but there is controversy over whether an association exists in patients from Western countries. To determine whether such a relationship exists, we retrospectively studied 6 cases of primary LELC of the lung, all of which were in Western patients. There were 4 men and 2 women, ranging in age from 49 to 75 years. The tumors ranged from 1 to 4.5 cm in diameter. Four patients had stage I disease, 1 had stage IIb disease, and 1 had stage IIIa disease. All patients are alive without evidence of disease with a follow-up of 18 to 30 months. Formalin-fixed, paraffin-embedded tissue was stained with hematoxylin-eosin for routine evaluation and immunostained for keratin and leukocyte common antigen (LCA). LCA staining was performed to exclude large-cell lymphoma. Immunoperoxidase staining (1:500 clone CS1-4; Dako, Carpinteria, CA) and in situ hybridization were performed to detect EBV. Tumors consisted of solid nests of undifferentiated tumor cells in a syncytial arrangement surrounded by heavy lymphoplasmacytic infiltrate. Tumor cells stained positively for keratin but negative for LCA. All 6 cases were negative for EBV, suggesting no association between EBV and LELC in the Western population.
authors.affiliation: Division of Pathology, the University of Texas M.D. Anderson Cancer Center, Baylor College of Medicine, Houston, TX, USA.
authors.forename: C Y
authors.initials: CY
authors.lastname: Castro
authors.forename: M L
authors.initials: ML
authors.lastname: Ostrowski
authors.forename: R
authors.initials: R
authors.lastname: Barrios
authors.forename: L K
authors.initials: LK
authors.lastname: Green
authors.forename: H H
authors.initials: HH
authors.lastname: Popper
authors.forename: S
authors.initials: S
authors.lastname: Powell
authors.forename: P T
authors.initials: PT
authors.lastname: Cagle
authors.forename: J Y
authors.initials: JY
authors.lastname: Ro
mesh_terms: D000368:Aged; D014408:Biomarkers, Tumor / Q000032:analysis; D002294:Carcinoma, Squamous Cell / Q000737:chemistry / Q000473:pathology / Q000821:virology*; D004279:DNA, Viral / Q000032:analysis; D020031:Epstein-Barr Virus Infections / Q000378:metabolism / Q000473:pathology / Q000821:virology; D005260:Female; D004854:Herpesvirus 4, Human / Q000235:genetics / Q000302:isolation & purification*; D006801:Humans; D007124:Immunoenzyme Techniques; D017403:In Situ Hybridization; D017493:Leukocyte Common Antigens / Q000032:analysis; D008175:Lung Neoplasms / Q000737:chemistry / Q000473:pathology / Q000821:virology*; D008297:Male; D008875:Middle Aged; D009367:Neoplasm Staging; D012189:Retrospective Studies
chemical_list: D014408:Biomarkers, Tumor; D004279:DNA, Viral; D017493:Leukocyte Common Antigens