I Have An Enlarged Spleen 16.6 Cm Have Had Every

i have an enlarged spleen 16.6 cm have had every blood test known all neg. Bone marrow test neg for cancer cells special blood work to look for clones also neg
my blood work is back to being normal (dr wanted to remove spleen but since it has returned to normal has decided not to remove it) My lymphocytes were 53% just above high normal
mri showed normal size liver but fatty and a 5mm cystic focus / ductal side branch is present in pancreatic tail.