Objective: Neuroendocrine tumors (NET) of appendix are believed to behave less aggressively than NETs at other sites. Separate staging criteria have therefore been proposed, and tumor size >2 cm appears to be the dominant criterion for aggressive behavior in appendiceal NETs. However, it is controversial whether radical surgery is indicated in tumors measuring >2 cm. We report a case of a 13-year-old girl with acute appendicitis in whom appendectomy and right-sided hemicolectomy were performed. Method: Surgical specimens were sampled and processed according to standard histological and immunohistochemical (IHK) procedures. Results: In the base of appendix, there was a tumor measuring 1.5 cm in diameter, focally invading mesoappendix, with free resection margins. Microscopically, tumor exhibited characteristic features of NET G1, with positive IHK for chromogranine and synaptophysin, and Ki67 index <2 %. IHK for podoplanin revealed focal lymphovascular invasion. In the right-sided hemicolectomy specimen, there was no residual tumor, metastasis was found in one ilecoecal lymphnode. Conclusion: Our case shows that appendiceal NET smaller than 2 cm can metastasize to regional lymphnodes. IHK against podoplanin might be helpful in searching for lymphovascular invasion, helping to separate it from the retraction clefts, thus providing additional information concerning risk factors for a more aggressive behavior.