title: Ultrasonic demonstration of endometrial fluid collections unassociated with pregnancy.
abstract: Intrauterine fluid collections were demonstrated by ultrasound in 17 non-pregnant patients. In nearly all instances, the surrounding echoes were of low to moderate amplitude. This has been noted previously in women with an ectopic or abnormal intrauterine pregnancy. In 2 patients, a well-defined thick rind of high-amplitude echoes encompassed the fluid, simulating an early gestational sac. Small intrauterine fluid collections were seen most frequently in non-pregnant patients who had vaginal bleeding or inflammation of the endometrium or adnexa.
mesh_terms: D000038:Abscess / Q000175:diagnosis; D000293:Adolescent; D000328:Adult; D003560:Cysts / Q000175:diagnosis; D004716:Endometritis / Q000175:diagnosis; D005122:Exudates and Transudates; D005260:Female; D006801:Humans; D008598:Menstruation; D011555:Pseudopregnancy / Q000175:diagnosis; D014463:Ultrasonography; D014591:Uterine Diseases / Q000175:diagnosis*; D014592:Uterine Hemorrhage / Q000209:etiology; D014594:Uterine Neoplasms / Q000175:diagnosis