Case 6 Hx: preoperative screening ( It’s early in the year so I’ll give you the right diaphragmatic eventration)
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Does this help? Notice the density - ie fat.
Answer: Bochdalek hernia
Probably wise to CT this if there is no p.rior or without any history. Ideally a mass should be a little more dense on the plain film, but you never know what is popping up there along with fat - ie colon, kidney, spleen, etc