Case Study:

A 25-year-old gravida 3 para 2 woman gives birth at term to twins. Twin A weighs 2290 gm and twin B weighs 2910 gm. Twin A is pale while twin B exhibits plethora with hydrops fetalis.


Which of the following is the most likely cause for these findings?

A Diamnionic-dichorionic placenta

B Congenital infection

C Erythroblastosis fetalis

D Twin-twin transfusion syndrome

E Placental hemangioma

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Answer / Explanation:

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(D) CORRECT.
A twin-twin transfusion syndrome is characterized by twins of discordant size. A monochorionic placenta can have vascular anastomoses.
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