Journal of Research in Medical Sciences1735-199517720120515Fetus in fetu: A rare case report75397539ENAtulSharmaResident Doctor, Department of General Surgery, Government Medical College, Kota (Raj), India. docatul83@gmail.comAshokGoyalSantoshSharma201108042012050120120413Fetus in fetu is a rare congenital anomaly in which malformed fetus grows within the body of its twin. It is almost always detected as an abdominal mass in infancy. It is a parasitic twin of a diamniotic, monozygotic twin. It should be differentiated from teratoma which has no axial arrangement and has got definite malignant potential. Herein, we present a case of a two-month old female infant and review the literature. Although fetus in fetu is a rare condition, correct diagnosis using imaging can be made before surgery. It should be considered as a differential diagnosis for lump abdomen especially in infants. Complete excision is curative.KEYWORDS:Fetus in Fetu, Teratoma, Twin