Asteroid body in a giant cell from a lung of an intravenous drug abuser. Birefringent debris from dirty injections are obvious.
For those who don’t know, an “asteroid body” is an inclusion in a giant cell that has a kind of spiky star shape. When I was in training, we were taught to think of sarcoidosis when we saw them, but in fact they are pretty nonspecific. I mostly see them in dead drug users.