Detection of chromosomal instability in paired breast surgery and ductal lavage specimens by interphase fluorescence in situ hybridization.
King BL, Tsai SC, Gryga ME, D'Aquila TG, Seelig SA, Morrison LE, Jacobson KK, Legator MS, Ward DC, Rimm DL, Phillips RF.
Department of Therapeutic Radiology, Yale University School of Medicine, New Haven, Connecticut 06520, USA. bonnie.king@yale.edu
PURPOSE:Ductal lavage is a new modality for collecting exfoliated breast cells with the goal of detecting early neoplasia. The purpose of our study was to evaluate the correlation between cancer-associated abnormalities in breast lesions and exfoliated breast cells collected by ductal lavage. EXPERIMENTAL DESIGN: We performed histopathologic, cytologic, and molecular cytogenetic analyses on 39 paired cases of surgically excised breast lesions and ductal lavage specimens collected immediately before surgery. RESULTS: Abnormal cytology was detected in 7 of 15 (47%) of the evaluable lavages collected from malignant cases, versus 4 of 19 (21%) of the evaluable lavages harvested from benign cases for a sensitivity and specificity of 47 and 79%, respectively. Interphase fluorescence in situ hybridization analysis of all evaluable lavages revealed numeric changes on chromosomes 1, 8, 11, and/or 17 in 10 of 14 (71%) specimens from malignant cases versus 2 of 18 (11%) from benign cases for a sensitivity and specificity of 71 and 89%, respectively. CONCLUSIONS: Our study demonstrates that cytologic and genetic abnormalities associated with breast cancer progression can be detected in ductal lavage cells collected from women with in situ and invasive breast cancer and suggests that fluorescence in situ hybridization may have superior sensitivity and specificity compared with conventional cytology.
Publication Types:
PMID: 12684427 [PubMed - indexed for MEDLINE]