title: Association of CK19 mRNA detection of occult cancer cells in mediastinal lymph nodes in non-small cell lung carcinoma and high risk of early recurrence.
abstract: This study was designed to screen occult cancer cells by CK19 mRNA detection using reverse transcriptase-polymerase chain reaction (RT-PCR) in mediastinal lymph nodes stations (MLNS) in non-small cell lung carcinoma (NSCLC). In 49 NSCLC patients free of mediastinal adenopathy on computed tomograph, 254 MLNS were evaluated by histopathology, immunohistochemistry (IHC) and RT-PCR. Of 225 non-tumoral MLNS on histopathology, 32 (14.2%) were positive by RT-PCR. IHC did not provide significant additional results. Seventeen patients were without mediastinal tumoral extension on histopathology and RT-PCR (Group 1), 16 were upgraded by RT-PCR (Group 2) and 16 pN2 on histopathology (Group 3). The two-year cancer-related death survival in Groups 1 (100%) and 2 (64.5%) was significantly different (P=0.04). The relative risk of recurrence in Group 2 compared with Group 1, evaluated by the Cox model multivariate analysis, was 5.61 (P=0.02). In conclusion, CK19 mRNA detected by RT-PCR in MLNS was significantly associated with an increased risk of rapid recurrence.
authors.affiliation: Department of Thoracic Surgery, HEGP, 20 Rue Leblanc, 75015 Paris, France. francoise.le-pimpec-barthes@hop.egp.ap-hop-paris.fr
authors.forename: Françoise
authors.initials: F
authors.lastname: Le Pimpec-Barthes
authors.forename: Claire
authors.initials: C
authors.lastname: Danel
authors.forename: Roger
authors.initials: R
authors.lastname: Lacave
authors.forename: Sylvie
authors.initials: S
authors.lastname: Ricci
authors.forename: Xavier
authors.initials: X
authors.lastname: Bry
authors.forename: Frédérique
authors.initials: F
authors.lastname: Lancelin
authors.forename: Cécile
authors.initials: C
authors.lastname: Leber
authors.forename: Bernard
authors.initials: B
authors.lastname: Milleron
authors.forename: Jocelyne
authors.initials: J
authors.lastname: Fleury-Feith
authors.forename: Marc
authors.initials: M
authors.lastname: Riquet
authors.forename: Jean-François
authors.initials: JF
authors.lastname: Bernaudin
mesh_terms: D000328:Adult; D000368:Aged; D002289:Carcinoma, Non-Small-Cell Lung / Q000378:metabolism* / Q000556:secondary / Q000601:surgery; D005260:Female; D006801:Humans; D007150:Immunohistochemistry / Q000379:methods; D007633:Keratins / Q000378:metabolism*; D008175:Lung Neoplasms / Q000378:metabolism* / Q000473:pathology / Q000601:surgery; D008197:Lymph Node Excision / Q000379:methods; D008207:Lymphatic Metastasis; D008297:Male; D008479:Mediastinal Neoplasms / Q000378:metabolism* / Q000601:surgery; D008875:Middle Aged; D015999:Multivariate Analysis; D009364:Neoplasm Recurrence, Local / Q000209:etiology / Q000378:metabolism; D012333:RNA, Messenger / Q000378:metabolism; D012334:RNA, Neoplasm / Q000378:metabolism; D020133:Reverse Transcriptase Polymerase Chain Reaction / Q000379:methods; D012307:Risk Factors; D016019:Survival Analysis
chemical_list: D012333:RNA, Messenger; D012334:RNA, Neoplasm; D007633:Keratins