A 56 year old chronic smoker, mass in bronchus resected. What is the possible marker?: (A) Cytokeratin, (B) Vimentin, (C) Epithelial membrane Cadherin, (D) Leukocyte
Answer is A. Ans. is 'a' i.e., Cytokeratin o Squamous cell carcinoma is most commonly found in men and is closely correlated with a smoking history. o Histologically, it is characterized by keratinization and intracellular bridges. o Cytokeratin is a marker for keratinizing cells.