Your cytopathologist needs a good beating about the head and neck.
Lymphoma = Big cells
Small cell = Small cells
FWIW, I hate when they try to give a diagnosis on the ROS path. The only thing they should say is "adequate/inadequate" and "malignant/normal/reactive/necrotic". That's it. I've seen too many cases like this where the patient hears "well, we think it might be lymphoma (curable) and then it comes back small cell (really, really not curable) and now I have to walk that back (and take them from "hey, I can cure you" to "hey, you're going to be dead in <2 years" which is always a fun conversation to have). Some of my Pulm folks are good at deferring that discussion, some are not.