in addition , hyperplasia of the ductal and ductular epithelium ( in 57 % and 39 % of the patients , respectively ) , squamous cell metaplasia of the ductules ( in 48 % of the cases ) , as well as endocrine tumors ( islet cell adenoma , 10 % ; mixed ductular-insular adenoma , 3 % ) were found .
C0022134
islet cell adenoma
C0001430
adenoma