Author: Walid E. Khalbuss MD PhD FIAC; University of Pittsburgh Medical Center (UPMC), Pittsburgh, Pennsylvania, USA

Reviewer: Daniel F. Kurtycz, MD, University of Wisconsin School of Medicine and Public Health, Madison, Wisconsin, USA

69 year old smoker female presented with lung nodule, 2.8 cm. Lung FNA was performed (Images 1-4).

Fig. 1

Fig. 2

Fig. 3

Fig. 4

Which of the following applies to the depicted lesion?