Appendiceal adenocarcinoma is a type of cancer of the appendix, according to Cancer.net. In the colonic-type adenocarcinoma, the cancer begins at the bottom of the appendix and often behaves like colorectal cancer. Surgeons sometimes detect it when a patient undergoes surgery for a disorder such as appendicitis.
Only about 10 percent of appendix cancers are colonic-type adenocarcinoma, says Cancer.net. The signet-ring cell adenocarcinoma of the appendix is even less common. It is an aggressive cancer that sometimes begins in the large intestine or the colon and penetrates into the appendix. A hybrid appendix cancer, called goblet cell carcinoma/adenocarcinoid, has the features of both adenocarcinoma and carcinoid cancers. Because it tends to be aggressive, it is treated as an adenocarcinoma.
Symptoms of appendiceal adenocarcinoma include appendicitis, fluid and pain in the abdomen, bloating and pain in the pelvic area, states Cancer.net. Sufferers also sees changes in bowel habits and may become infertile.
Treatment for appendiceal adenocarcinoma involves removing the appendix and as much as half of the right side of the patient's large intestine, claims The Appendix Cancer Connection. The doctor also treats the patient with chemotherapy directly inserted in his abdomen. Additional treatment options include intravenous chemotherapy or debulking surgery.