Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.
(A) Biopsy from the upper division bronchus of the left upper lobe using hematoxylin and eosin staining showing small tumour cells with scant cytoplasm; immunohistochemical analysis showing positive staining for (B) neuronspecific enolase, (C) thyroid transcription factor-1 and (D) Ki67.
