<prompt> Edema over the mastoid is seen in-Bells PalsyLateral sinus thrombophlebitisCSOMASOM  <response>: Ans. is b i.e., Lateral sinus thrombophlebitis Signs of lateral sinus thrombosis sigmoid sinus thrombosiso Griesingers sign:- odema over the posterior part of mastoid due to thrombosis of mastoid emissary veinso Papilloedemao Tobey-Ayer testo Crowe-Beck test:- Pressure on jugular vein of healthy side produces engorgement of retinal veins. Pressure on affected side does not produce such changeo Tenderness along jugular vein 