Delivery of Euthyroid Baby following Hyperthyroidism in Twin Gestation with Coexisting Complete Hydatidiform Mole

Figure 1

Ultrasound imaging of twin gestation (complete HM and coexisting normal fetus) at 14 weeks (a), 22 weeks (b), and 24 weeks (c). Histologic examination: (d) gross appearance with multiple tan-gray semitransparent vesicles of variable size admixed with solid fragments of tan-brown soft tissue and blood clot with no fetal parts; (e) diffuse villous enlargement with marked hydropic change; absent p57 immunostain (not shown) supporting the diagnosis of complete hydatidiform mole; (f) circumferential trophoblastic proliferation with focal necrosis and cytologic atypia, characteristics of complete HM.