12 Weeks Pregnant, Dark Vaginal Discharge

Upon examination, uterus was large for date (almost 20-week size). No abdominal tenderness was elicited. Previous laboratory results were within normal limits.

Figure 1. Ultrasonography showed thickened, enlarged placenta with multiple small cystic spaces along the anterior uterine wall.

Figure 2. Ultrasonography showed thickened, enlarged placenta with multiple small cystic spaces along the anterior uterine wall.

Figure 3. An 11-12 week sized fetus was seen in the fundic region of uterine cavity; the fetus appeared to be displaced to the periphery by the large placenta.

Figure 4. An 11-12 week sized fetus was seen in the fundic region of uterine cavity; the fetus appeared to be displaced to the periphery by the large placenta.

Diagnosis: Partial molar pregnancy with missed abortion

Partial molar pregnancy, also known as partial hydatidiform mole, is a type of gestational trophoblastic disease (GTD).

Molar pregnancy is a benign variety of GTD with partial hydatidiform mole being less common than the complete hydatidiform mole.

Genetically abnormal though well-formed fetal components are visualized in partial mole.

It is not possible to diagnose partial molar gestation based on clinical presentation because the signs and symptoms are not characteristic.

Ultrasonography is the primary imaging modality used to diagnose molar pregnancy.

The final conclusion can be reached only by correlating with clinical features, beta HCG level and histopathology.