PMC6944968_01
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.
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Pelvic ultrasound showed twin gestation with one complete HM and one coexisting normal fetus (Figures 1(a)-1(c)). Postoperatively, gross examination of the tissue revealed fragments of pink-red spongy soft tissue without any fetal parts or abnormal Z line, while microscopic examination revealed hydropic villi and trophoblastic proliferation confirming the diagnosis of a complete mole (Figures 1(d)-1(f)).