Swikrity Upadhyay Baskota, MBBS, MD and Liron Pantanowitz, MD
A woman in her mid-50s presented with a slowly growing left lower lobe lung mass that measured up to 1.5 cm by CT scan. CT-guided FNA smears and cell block preparation were performed. The microscopic images of Diff-Quik stained direct smears and an H&E stained cell block section are shown in figures 1, 2 and 3. What is your diagnosis?
Cytology Diagnosis: Atypical Epithelial Cells, Favor Adenocarcinoma.
Based on the cytology impression; a left lower lobe lobectomy was performed.
H&E and IHC (TTF-1) stained sections of the tumor are shown. What is your diagnosis?