Presentation
Neonate with left abdominal distension. No prenatal ultrasound done.
Patient Data
Age: Neonate
From the case:
Fetus in fetu
Frontal

There is fullness in the left abdomen with several calcific forms resembling bones.
From the case:
Fetus in fetu

Two heterogeneous ovoid masses located in the left abdomen, appear retroperitoneal. Both show internal calcific components (bones) but no obvious internal flow.
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The masses were removed in their entirety.
From the case:
Fetus in fetu
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An X ray study reveals partially formed skeletons in both "masses", including vertebrae, ribs, and long bones.
From the case:
Fetus in fetu
Frontal

Normal follow-up x ray of the neonate.
Nasogastric tube well-placed.
Case Discussion
An extremely rare case of fetus in fetu (or rather, two fetuses in fetu).
The neonate recovered from surgery rapidly and uneventfully.