What is the test that is being performed here?
It is an HSG (hysterosalpingogram) - contrast media is introduced into the cervix via a small catheter. It should fill the uterus and then the fallopian tubes and demonstrate a spill into the peritoneum, proving that they are patent.
What is demonstrated here?
There is only one horn to the uterus. It is associated with a fallopian tube and this demonstrates free spill into the peritoneum.
What is the diagnosis? What are the related abnormalities?
This is a unicornuate uterus and is part of a group of anomalies of mullerian duct development.
Hysterosalpingogram (HSG) shows right unicornuate uterus that appears elongated. There is only one solitary fallopian tube (right tube) that drains into the peritoneal space. There is no rudimentary contralateral horn.