A 38 year old woman presented with per vaginal bleeding, pain in the lower abdomen and passage of grape-like structures per vaginum. A urine pregnancy test was positive.
On transvaginal ultrasonography, the uterus is anteverted, bulky and measures 10.8×6.7×5.5 cm. There is a heterogeneously hypoechoic mass with cystic spaces in the endometrial cavity giving a ‘snowstorm’ appearance. There are no focal lesions in the myometrium. The left ovary shows an anechoic cystic lesion measuring 15×15 mm with posterior acoustic enhancement likely theca lutein cyst. Both the adnexa are normal