Skip to main contentLast updated: 06-Nov-2026
Dr Harsh Shah
MS, MCh (Surgical Gastroenterology), DrNB (Surgical Gastroenterology)
Registered with Gujarat Medical Council, Reg. No. G-38738
HIPEC & Abdominal Lining Cancer Surgeon
Dr. Jivraj Mehta Hospital, Vasna, Ahmedabad · 18 years of experience
In short
“Appendix tumour” is a family name, not one disease. The lining of the appendix makes two things, mucus and hormones, so tumours fall into two groups: mucus-making and hormone-cell.
Some types grow very slowly and need only a small operation. Others behave like bowel cancer and need a wider one. The type is decided under the microscope, not on the scan.
So the first question to ask about any report is simple: which type, and which grade? The rest of the plan follows from those two answers.
For tests, operations, HIPEC and follow-up in full, read our appendix tumours, mucocele and pseudomyxoma page. This post does one job: it helps you read the name on your report.
The appendix wall holds different cell families. A tumour takes the character of the cell it grows from, and that decides how it behaves.
Mucus-making cells line the inside of the appendix. Small hormone-producing cells sit scattered in the wall. A third group, the goblet cells, makes mucus and also carries features of hormone cells. Most appendix tumours are found by chance, after an operation for appendicitis or on a scan done for another reason. Few cause symptoms of their own.
The table lists each name you may see on a report, in plain words. Read across a row to see how that type usually behaves and what it usually needs.
| Name on the report | In plain words | Behaviour | Usual treatment |
|---|---|---|---|
| Neuroendocrine tumour (carcinoid) | Tumour of hormone cells, often at the tip | Slow. Small ones rarely spread | Appendicectomy alone for a small tumour. A wider operation for a larger one or one at the base |
| Goblet cell adenocarcinoma | Mixed mucus and hormone-cell features | Behaves more like a cancer than a carcinoid | Usually right hemicolectomy, sometimes with chemotherapy |
| LAMN (low-grade mucinous neoplasm) | Slow mucus-making growth in the lining | Slow. The danger is spilled mucus | Appendix removed whole, then follow-up |
| HAMN (high-grade mucinous neoplasm) | Mucus-making growth with more abnormal cells | Faster than LAMN | Appendix removed whole. A wider operation is often discussed |
| Mucinous adenocarcinoma | Cancer that makes mucus | Can invade the wall and spread in the belly | Right hemicolectomy. HIPEC if mucus has spread |
| Colonic-type adenocarcinoma | Cancer like a bowel cancer, without much mucus | Spreads to glands and liver like bowel cancer | Right hemicolectomy, then chemotherapy by stage |
Mucinous cancer, colonic-type cancer and goblet cell adenocarcinoma are cancers. The others sit between harmless and cancer, and each needs its own plan.
It is not a separate tumour. It is what happens when a mucus-making tumour spills into the belly and its cells keep making mucus there.
Mucus slowly fills the belly and presses on the bowel. This can happen after a mucus-making appendix tumour bursts, or if it is punctured or drained. Pseudomyxoma is treated with cytoreductive surgery and HIPEC, a specialised operation. Early review by a surgeon who does this work helps the team plan well.
By the pathologist, who examines the whole removed appendix under the microscope. Scans and blood tests only suggest the type.
Ask which type and grade it is, whether the edge is clear, and whether a second operation changes the outcome.
No. Some types, such as a small neuroendocrine tumour or a low-grade mucinous neoplasm, grow slowly and need a small operation. Goblet cell, mucinous and colonic-type adenocarcinomas are cancers.
Both are mucus-making growths of the appendix lining. LAMN has mildly abnormal cells and grows slowly. HAMN has more abnormal cells, so a wider operation is often discussed.
It is a tumour of the hormone-making cells in the wall, once called carcinoid. It is often found at the tip after an operation for appendicitis. A small one usually needs no more surgery.
The pathologist checks whether tumour reaches the base where the appendix was cut. A clear edge is reassuring. A tumour at the edge may mean a second operation on the right colon.
No. A mucocele only describes an appendix swollen with mucus. It can come from a harmless blockage or from a mucus-making tumour, and only the microscope report can tell which.
Often yes. Neuroendocrine tumours and LAMN rarely need chemotherapy. Cancers such as colonic-type adenocarcinoma may, depending on stage. Your surgeon and oncologist advise after the full report.
When a mucus-making tumour has spilled into the belly and caused pseudomyxoma peritonei, or in selected mucinous cancers. It is part of cytoreductive surgery and is planned only after full review.
For the full picture of appendix growths and their treatment, start at the appendix tumours, mucocele and pseudomyxoma page. For questions before you travel, call +91-63555-64601.
Dr Harsh Shah — Dr. Jivraj Mehta Hospital, Vasna, Ahmedabad
Dr. Jivraj Mehta Hospital, Dr Jivraj Mehta Marg, Vasna, Ahmedabad 380007.
Consultations, review of reports and scans, operations and follow-up. OPD Monday to Saturday, 9 am to 5 pm.
Appointments: +91-63555-64601 · +91-63590-11009 · Hospital 079-2663 6363
Directions to the hospital · WhatsApp +91-63555-64601
Has a report named your appendix tumour with words you do not follow: "neuroendocrine", "goblet cell", "LAMN" or "mucinous"? Dr Harsh Shah will read the report with you and explain what the type means for treatment. Call, or send the report on WhatsApp. Call +91-63555-64601 Send the report on WhatsApp
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