Which of the following is not seen on this chest x-ray?

A) Right sided pneumothorax.
B) Left sided pleural effusion.
C) Obliteration of left hilum.
D) Breast shadow.
E) Patient is rotated to the right.




The answer is A. This slightly rotated chest x-ray shows a large opacity obliterating the left hilum which is associated with some volume loss in the left hemithorax and what appears to be a pleural effusion. The most likely diagnosis is primary lung cancer.

Image courtesy of Dr Frank Faillard, Radiopaedia.org. (Original file here) Creative Commons BY-SA-NC