What is the most possible diagnosis ? Many answers can be accepted in most of the cases uploaded in Spot Diagnosis section , I add the correct answer according to original story of the photo. Histological examinations done to this congenital mass reveled that the mass wall is composed of columnar cells with lymphoid infiltrate and the fluid inside this mass contains cholesterol crystals. Hidden Content: Reply To See The Correct Answer , Or Wait 7 Days To See It. Add a comment below to see the correct answer in the box below the image. If you are not a member you can register for free Here : http://forum.facmedicine.com/login