<prompt> Leash sign is found inEctopic PregnancyVulvovaginitisPolyhydramniosTubercular Salpingitis  <response>: Ans. A. Ectopic PregnancyAll cases of ectopic pregnancies had a typical eccentric leash of vessels on color Doppler that showed a low resistance placental type of flow on spectral Doppler. This is called leash sign. This sign has a sensitivity of 100 and specifity of 99 a positive predictive value of 95 and negative predictive value of 100 thus helping in the diagnosis of early ectopic pregnancy, and resulting in earlier treatment with reduced morbidity and mortality. 