<unk> s are non-cancerous growths, which can recur if not completely surgically removed. There are reported cases of cancers arising within<unk> s, and following excision of<unk> s, but these are rare occurrences.
Nipple adenoma
Sebaceous adenoma
Ceruminous adenoma
Ectopic pancreas
Pancreatic serous cystadenoma
Enteric duplication cyst
Bile duct hamartoma
Gartner's duct cyst