Isolated Torsion of the Fallopian Tube

Objective. The purpose of this series is to describe the sonographic features of isolated torsion of the fallopian tube. Methods. Sonography was performed in 4 women with acute lower abdominal pain. Results. The uterus and ovaries were normal in the 4 women. The ipsilateral fallopian tube was distended with fluid. A round mass was seen close to the tube. A sonographic whirlpool sign was seen on rocking movement of the probe over the mass. Ipsilateral torsion of the fallopian tube was confirmed at surgery in all of them. Conclusion . The sonographic whirlpool sign is the specific sign of tubal torsion.