veronicaviolato
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in Case Study
Fetus in fetu

Fetus in fetu

Fetus in fetu is a rare developmental abnormality in which the tissues that make up a fetus grow and differentiate within the body of a normally developed twin. It is an atypical twin pregnancy, in which part of the stem cells of a blastocyst are localized between the cells of a developing embryo and proceed to differentiate independently. The included fetus is small and malformed; it is generally provided with a vertebral column, has lower and upper limbs sketched and, despite the common absence of brain and heart, has a somatotopic organization of internal organs similar to that of healthy individuals. Diagnosis can be made ultrasonographically during pregnancy or after birth by MRI or CT. The treatment is decisive and involves surgical removal. People who have a fetus in feto can live with it in their body without realising that but it usually hurts a lot.

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