Lithopedion: stone baby.

Two cases of lithopedion were encountered. In one case, computerized tomographic (CT) findings are illustrated. There are no classical clinical signs or symptoms that aid in the diagnosis of this rare condition. A calcified fetus and investing membranes are readily identified on a plain film of the abdomen, and these constitute an absolute sign of lithopedion. Excretory urography, barium enema examination, ultrasound, and CT represent other diagnostic modalities in the evaluation of this condition, but they are rarely indicated or valuable.