OB/Gyn - Hematocolpos
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Caption
13yoF with worsening abdominal pain and back pain x3 months, found to have large bilobed pelvic mass consistent with hematocolpos/hematometra due to imperforate hymen. Transabdominal ultrasound using a 5-1MHz phased array probe in the transverse plane 2cm above pubic symphysis. A large hypoechoic structure within the uterus is seen displacing the bladder superoanteriorly with posterior acoustic enhancement. US can demonstrate retained old blood as a hypoechoic cystic structure and monitor resolution after hymenectomy. (Hassani 1978)