Chandu, a 45 yrs male shows calcification on the Rt side of his abdomen in an AP view. In lateral view the calcification is seen to overlie the spine. Most likely diagnosis is:
Gallstones
Calcified mesenteric nodes
Renal stones
Calcified rib
In lateral view the Renal stone lies superimposed on shadow of veebral column while gall stones are seen well infront of the veebral bodies. Ref: Clinical Surgery By S. Das.