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Indian Journal of Pathology and Oncology


Fetus-in- Fetu Vs retroperitoneal mature teratoma: A revisit of the known rarity


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Author Details : Dhiraj B Nikumbh, Sudhir Singhavi, Rahul Shinde, Shirish Gondane

Volume : 3, Issue : 4, Year : 2016

Article Page : 732-735


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Abstract

Fetus-in-fetu (FIF) is a rare pathological entity, not usually seen in the clinical practice. FIF is defined as the presence of one of the twins in the body of other. FIF may be controversial topic in its resemblance to retroperitoneal teratoma.
A-18-months old baby girl present with the abdominal mass. Radiological findings revealed heterogeneous retroperitoneal mass containing calcifications. Surgical exploration was done and the mass was successfully excised. Physical examination and histopathology of the mass confirmed the diagnosis of fetus-in-fetu.
FIF is a rare pathological condition and fewer than 200 cases have been reported worldwide with an incidence of 1 in 5,00,000 births. The comparative features of FIF vs retroperitoneal mature teratoma (RMT) and various theories of origin of FIF are discussed. The case is being reported in view of the unusual gross and microscopic findings and rarity of FIF.

Keywords:
Fetus-in-fetu, Retroperitoneum, Teratoma

How to cite : Nikumbh D B, Singhavi S, Shinde R, Gondane S, Fetus-in- Fetu Vs retroperitoneal mature teratoma: A revisit of the known rarity. Indian J Pathol Oncol 2016;3(4):732-735

Copyright © 2016 by author(s) and Indian J Pathol Oncol. This is an Open Access article distributed under the terms of the Creative Commons Attribution License (CC BY 4.0) (creativecommons.org)