Fetus in fetu or differentiated teratomas?

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2006-10-23
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Two cases of congenital teratoma were operated upon. In view of the high degree of organoid differentiation of the teratomas with rudimentary limbs, intestine, brain-like and pulmonary tissues, it was difficult to distinguish it from fetus-in-fetu. In the light of the data obtained and extensive review of related literature, we consider that fetus-in-fetu and teratoma may not be unrelated entities. Our cases support the view held that fetuses in fetu are highly differentiated teratomas.
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Basu A, Jagdish S, Iyengar KR, Basu D. Fetus in fetu or differentiated teratomas? Indian Journal of Pathology & Microbiology. 2006 Oct; 49(4): 563-5