Imaging Diagnostic Dilemma of Large Subchorionic Hematoma.

Vaginal bleeding in first-half of pregnancy occurs in one-fourth of all pregnant women. This case report mainly highlights the occurrence of large subchorionic hematoma (SH) (area >13.7 cm2/, stripping of >50% of chorionic circumference) in first trimester. Usually, large SHs occur in second trimester, are associated with pregnancy loss but are relatively uncommon in first trimester. This case describes a 32-year-old G2P1L1’ who presented with complaints of vaginal spotting, was misdiagnosed to have threatened abortion with twin gestation. Later, the diagnosis was confirmed to be a large SH. Patients with large SH are at greater risk for eventual fetal death, hence the need for serial scanning to determine final outcome of their gestation.