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General Surgery · Gastrointestinal surgery: appendiceal neuroendocrine tumour size
Sample itemAfter appendicectomy for appendicitis, histology shows a 2.5 cm well-differentiated neuroendocrine tumour at the base of the appendix with extension into the caecum. What is the appropriate next step?
Original practice item, not a recalled exam question. Nothing here is recorded.
The answer and the reasoning
D. Right hemicolectomy
Appendiceal neuroendocrine tumours below 1 cm need no further surgery after appendicectomy. Tumours larger than 2 cm, or those at the base or with caecal or mesoappendiceal invasion, carry a significant risk of nodal metastasis and are treated by right hemicolectomy.
Option by option
A. No further treatment
Observation is appropriate only for small tumours, usually below 1 cm, with clear margins.
B. Somatostatin analogue therapy alone
Medical therapy does not replace resection for a localised tumour.
C. Completion caecectomy only
A limited caecal resection does not clear the draining lymph nodes.
D. Right hemicolectomy (correct)
Correct. A tumour larger than 2 cm with base involvement warrants oncological right hemicolectomy.
Source note: Original NextPrep sample item — pending expert review. This item is original practice material awaiting independent expert review, so confirm important facts in a standard textbook.
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