A 67 year nude smoker presents with haemoptysis and cough. Bronchoscopic biopsy revealed un-differentiated tumour. The immunohistochemical marker that can be most helpful is-
Correct Answer: Cytokeratin
Description: TEXT BOOK OF PATHOLOGY HARSHMOHAN 6TH EDITION PG NO 16 Epithelial tumors are stained by pankeratin or cytokeratin (high or low MW) <p>
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