Abdominal pregnancy is extremely rare, but even more unusual is the prolonged retention of an advanced abdominal pregnancy with lithopedion formation. Lithopedion is a rare obstetrical outcome of an undiagnosed and untreated advanced abdominal pregnancy, mostly found incidentally.
Just came across this case on www.mypacs.net , an amazing Radiograph...
Here is a link to case of-
"75 year old female with hematuria. Scout of IVP reveals a calcified fetus overlying the right iliac wing. On further questioning the patient claims that she "lost" a baby when she was younger, but did not seek medical care at the time."
LINK TO CASE IMAGE-