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The aim of the present project is to evaluate the frequency of distant metastases and clinically relevant relapse and mortality, respectively, of aNEN (Neuroendocrine Neoplasms of the Appendix) measuring 1 - 2 cm.
The investigators hypothesize that the mortality rate of aNET (Neuroendocrine Tumors of the Appendix) measuring 1 - 2cm is less than 1%. Furthermore, the investigators hypothesize that regional lymph node metastases of aNET measuring 1 - 2 cm are clinically not relevant and are not associated with reduced survival. The investigators therefore hypothesize that oncological right-sided hemicolectomy has no impact on long-term survival after complete resection of aNET measuring 1 - 2 cm and that the malignant potential quo ad vitam of these tumors is lower than the risk of oncological hemicolectomy.
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| Label | Type | Description | Intervention Names |
|---|---|---|---|
| Retrospective Group |
| ||
| Prospective Group |
|
| Name | Type | Description | Arm Group Labels | Other Names |
|---|---|---|---|---|
| Histopathological review | Other | Histopathological review |
|
| Measure | Description | Time Frame |
|---|---|---|
| Clinically relevant relapse of aNET measuring 1 - 2 cm in a population based manner | 10 years | |
| Clinically relevant mortality of aNET measuring 1 - 2 cm in a population based manner | 10 years | |
| Frequency of distant metastases in aNET measuring 1-2 cm | 10 years |
| Measure | Description | Time Frame |
|---|---|---|
| Association of histological risk factors in aNET measuring 1 - 2 cm and qualifying for oncological right-sided hemicolectomy according to ENETS guidelines with the occurrence of regional lymph node and distant metastases | 10 years | |
| Relationship between regional lymph node metastasis and survival in patients with aNET measuring 1 - 2 cm |
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Inclusion Criteria:
Exclusion Criteria:
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The investigators will include all patients with aNET measuring 1 - 2 cm and complete resection between 01.01.2005 and 31.12.2010 of the primary tumor.
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| Name | Affiliation | Role |
|---|---|---|
| Reto Kaderli, MD | Insel Gruppe AG, University Hospital Bern | Principal Investigator |
| Facility | Status | City | State | ZIP | Country | Contacts |
|---|---|---|---|---|---|---|
| UHIBerne | Bern | 3010 | Switzerland |
| PubMed Identifier | Type | Citation | Retractions |
|---|---|---|---|
| 36640790 | Derived | Nesti C, Brautigam K, Benavent M, Bernal L, Boharoon H, Botling J, Bouroumeau A, Brcic I, Brunner M, Cadiot G, Camara M, Christ E, Clerici T, Clift AK, Clouston H, Cobianchi L, Cwikla JB, Daskalakis K, Frilling A, Garcia-Carbonero R, Grozinsky-Glasberg S, Hernando J, Hervieu V, Hofland J, Holmager P, Inzani F, Jann H, Jimenez-Fonseca P, Kacmaz E, Kaemmerer D, Kaltsas G, Klimacek B, Knigge U, Kolasinska-Cwikla A, Kolb W, Kos-Kudla B, Kunze CA, Landolfi S, La Rosa S, Lopez CL, Lorenz K, Matter M, Mazal P, Mestre-Alagarda C, Del Burgo PM, van Dijkum EJMN, Oleinikov K, Orci LA, Panzuto F, Pavel M, Perrier M, Reims HM, Rindi G, Rinke A, Rinzivillo M, Sagaert X, Satiroglu I, Selberherr A, Siebenhuner AR, Tesselaar MET, Thalhammer MJ, Thiis-Evensen E, Toumpanakis C, Vandamme T, van den Berg JG, Vanoli A, van Velthuysen MF, Verslype C, Vorburger SA, Lugli A, Ramage J, Zwahlen M, Perren A, Kaderli RM. Hemicolectomy versus appendectomy for patients with appendiceal neuroendocrine tumours 1-2 cm in size: a retrospective, Europe-wide, pooled cohort study. Lancet Oncol. 2023 Feb;24(2):187-194. doi: 10.1016/S1470-2045(22)00750-1. Epub 2023 Jan 11. |
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Tissue blocks of deceased or distant metastatic patients.
| 10 years |
| Long-term survival after complete resection of aNET measuring 1 - 2 cm with or without oncological right-sided hemicolectomy | 10 years |