A 65 year old chronic smoker presented with a central lung mass with distal bronchiectasis and recurrent pneumonia. A greyish white tumor was resected. Which of the following histopathological finding is most likely to be seen -: (A) Small cells with scant cytoplasm, ill defined cell borders and hyperchromatic nuclei with nuclear moulding, (B) Derivatives of all three germ layers are seen, (C) Tall columnar cells with cytoplasmic and intra alveolar mucin, (D) Palisading or rosette - like arrangements of cells separated by abundant fibrovascular stroma
Answer is A. Palisading or rosette - like arrangements of cells separated by abundant fibrovascular stroma