Surgically proven case of left ovarian torsion.

Ovarian torsion is one of the major causes of acute abdomen in children. It is caused by elongated tube (increased mobility)or long/absent mesentery. The preceding factors for ovarian torsions are ovarian cysts, teratoma and other mass in adnexa. Most commonly right ovary is involved. Quick and confident diagnosis is important in saving the adnexal structures from vascular compromise.

Prognosis is excellent with appropriate treatment.

Imaging features

USG: Primary evaluation. Enlarged ovary with reduced or absent blood flow can indicate torsion.

CT:  For definitive diagnosis. Solid mass or target appearance around adnexa can indicate rotated fallopian tube and hyperdensities within can indicate hemorrhage. Uterus deviation, adnexal fat stranding and free fluid in abdomen can be indirect sign.

Differential diagnosis: Ovarian neoplasm and tubo-ovarian mass.