is a malignant tumor that develops in the glandular tissue of an organ. Lieberkuhnian adenocarcinoma is found in the Lieberkuhn glands located on the inner wall of the small and large intestines. This tumor sometimes appears on healthy mucus membrane, but in most cases it develops from a benign
tumor of the adenoma
glands. The adenomas, examined in an endoscopic test, can degenerate, meaning they evolve into malignant tumors. The tumor must then be removed surgically if possible, or chemotherapy or radiotherapy can be used depending on the case.