Abstract: Massive subchorionic thrombosis is a rare condition, defined as a large thrombus confined to the subchorionic space. It is associated with poor perinatal prognosis. However, prenatal diagnosis by ultrasonography is often difficult. We report a case of massive subchorionic thrombosis developing dermatomyositis after the delivery, followed by magnetic resonance imaging. Moreover, we review other 4 cases assessed with magnetic resonance imaging. Magnetic resonance imaging is very useful for confirmation of diagnosis and follow-up in combination with ultrasonography.
From the Departments of *Radiology, †Obstetrics and Gynecology, and ‡Pathology, Kitano Hospital, Osaka; and §Department of Radiology, Kyotokatsura Hospital, Kyoto, Japan.
Received for publication February 21, 2012; accepted March 2, 2012.
Reprints: Himoto Yuki, MD, Kitano Hospital, Osaka, Japan (e-mail: firstname.lastname@example.org).
The authors report no conflicts of interest.