monochorial

mon·o·cho·ri·on·ic

(mon'ō-kō'rē-on'ik),
Relating to or having a single chorion; denoting monovular twins.
Synonym(s): monochorial

monochorial

said of twins that have developed sharing a single chorion. Called also monochorionic.
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References in periodicals archive ?
Placental weight measured at birth was available for 17 of 46 bichorial twin pregnancies (mean, 964 g; median, 985 g; range, 600-1270 g) and for 5 of 7 monochorial twin pregnancies (mean, 953 g; median, 735; range, 600-1530 g).
A linear regression model was then fitted to evaluate the difference between MM pregnancies, distinguished as monochorial and bichorial, and MF ones, correcting for effect of week of gestation (Table 1).
Fetal DNA in maternal plasma in twin pregnancies

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