Cogwheel Sign

Gynaecology A term referring to the appearance by ultrasonography in pelvic inflammatory disease, consisting of oedematous intrasalpingeal folds that take the shape of a cogwheel on cross-section
Neurology Cogwheel rigidity
References in periodicals archive ?
US recognition depends on the finding of a normal ovary with intact blood flow beside a fluid-filled, thin-walled, tender, cystic structure with some of the previously mentioned sonomarkers of tubal occlusion such as the bead-on-a-string or cogwheel sign (FIGURE 50-5G).
Only two patients with chronic disease had the cogwheel sign, and none of the acute cases had the beads-on-a-string sign.