09-15-2007, 11:24 AM
A 57-year-old man is seen in clinic for a chronic cough. Chest x-ray demonstrates a lung mass;
bronchoscopy with bronchial lavage and biopsy reveals a tumor composed of small neoplastic
cells with prominent crush artifact that do not stain with immunohistochemical stains for
lymphocyte common antigen (LCA). Which of the following oncogenes has been associated with this
tumor?
A. bcl-2
B. erb-2
C. L-myc
D. N-myc
E. ret
bronchoscopy with bronchial lavage and biopsy reveals a tumor composed of small neoplastic
cells with prominent crush artifact that do not stain with immunohistochemical stains for
lymphocyte common antigen (LCA). Which of the following oncogenes has been associated with this
tumor?
A. bcl-2
B. erb-2
C. L-myc
D. N-myc
E. ret