Adenoma vs Adenocarcinoma Adenoma and adenocarcinoma are both abnormal growths of glandular tissue. Both can occur anywhere where there is glandular tissue. Glands are either endocrine or exocrine. Endocrine glands release their secretions directly into the bloodstream. Exocrine glands release their secretions onto an epithelial surface via a duct system. Exocrine glands may be […]