Figure 2: a) A 25-year-old women with 6 years of infertility Figure 2: a) A 25-year-old women with 6 years of infertility. Two-dimensional hysterosalpingo contrast sonography(HyCoSy) with lignosal contrast showed both tubes as echogenic and spill from fimbrial ends as a shower suggests, bilateral tubal patency. (b) The three-dimensional HyCoSy image of the same patient (25-year-old women with 6 years of infertility) shows both tubes and fimbrial ends. (These figures are reproduced with permission from Chegondi V N Rao, Chegondi Sindhu, Murali Krishna Kota. Three dimensional Hysterosalpingo Contrast Sonography with Lignosal as Contrast for Evaluation of Tubal Patency in the Infertile Women An Observational Cohort Study. Am J Sonogr 2019 2(4) 1-8)