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Kuhlen M, Kunstreich M, Pape UF, Seitz G, Lessel L, Vokuhl C, Frühwald MC, Vorwerk P, Redlich A. Lymph node metastases are more frequent in paediatric appendiceal NET ≥1.5 cm but without impact on outcome - Data from the German MET studies. EUROPEAN JOURNAL OF SURGICAL ONCOLOGY 2024; 50:108051. [PMID: 38430702 DOI: 10.1016/j.ejso.2024.108051] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/11/2023] [Revised: 02/11/2024] [Accepted: 02/20/2024] [Indexed: 03/05/2024]
Abstract
BACKGROUND Paediatric appendiceal neuroendocrine tumours (appNET) are very rare tumours, mostly detected incidentally by histopathological evaluation after appendectomy. Treatment recommendations are based on adult data considering high-risk NET as defined by European Neuroendocrine Tumour Society (ENETS) guidelines for completion right-sided hemicolectomy (RHC). Recent data suggest that less aggressive therapy may be justified. PROCEDURE Analysis of children and adolescents with appNET prospectively registered with the German Malignant Endocrine Tumour (MET) studies between 1997 and 2022. RESULTS By December 2022, 662 patients (64.7% females, 35.3% male) had been reported. Median age was 13.3 years [4.5-17.9], median duration of follow-up 2.2 years [0-10.9]. No distant metastases were reported. Tumour size was <1 cm in 63.5%, 1-2 cm in 33.2%, and >2 cm in 3.2% of patients. WHO grade 1 and 2 tumours were diagnosed in 76.9% and 23.1% of patients, respectively. Lymphovascular invasion and lymph node metastases were associated with tumour size ≥1.5 cm. 27.0% of patients presented with high-risk NET according to ENETS criteria. Of those, only 55.9% underwent secondary oncological right hemicolectomy. Neither distant metastases, nor recurrences or disease-related deaths occurred in patients with appendectomy only as well as in patients with completion RHC. Overall and event-free survival were both 100%. CONCLUSIONS Internationally harmonized consensus recommendations on treatment of children and adolescents with appendiceal NET are urgently needed to avoid completion RHC in high-risk patients.
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Affiliation(s)
- Michaela Kuhlen
- Paediatrics and Adolescent Medicine, Faculty of Medicine, University of Augsburg, Augsburg, Germany.
| | - Marina Kunstreich
- Paediatrics and Adolescent Medicine, Faculty of Medicine, University of Augsburg, Augsburg, Germany; Department of Paediatrics, Paediatric Haematology/Oncology, Otto-von-Guericke-University, Magdeburg, Germany
| | - Ulrich-Frank Pape
- Department of Internal Medicine and Gastroenterology, Asklepios Klinik St. Georg, Asklepios Tumorzentrum, Hamburg, Germany
| | - Guido Seitz
- Department of Paediatric Surgery and Urology, Center for Paediatric Surgery of the University Hospital Giessen-Marburg, Marburg, Germany; Department of Paediatric Surgery, Center for Paediatric Surgery of the University Hospital Giessen-Marburg, Giessen, Germany
| | - Lienhard Lessel
- Department of Paediatrics, Paediatric Haematology/Oncology, Otto-von-Guericke-University, Magdeburg, Germany
| | - Christian Vokuhl
- Department of Pathology, Section of Paediatric Pathology, Bonn, Germany
| | - Michael C Frühwald
- Paediatrics and Adolescent Medicine, Faculty of Medicine, University of Augsburg, Augsburg, Germany
| | - Peter Vorwerk
- Department of Paediatrics, Paediatric Haematology/Oncology, Otto-von-Guericke-University, Magdeburg, Germany
| | - Antje Redlich
- Department of Paediatrics, Paediatric Haematology/Oncology, Otto-von-Guericke-University, Magdeburg, Germany
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Pogorelić Z, Ercegović V, Bašković M, Jukić M, Karaman I, Mrklić I. Incidence and Management of Appendiceal Neuroendocrine Tumors in Pediatric Population: A Bicentric Experience with 6285 Appendectomies. CHILDREN (BASEL, SWITZERLAND) 2023; 10:1899. [PMID: 38136101 PMCID: PMC10741616 DOI: 10.3390/children10121899] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/23/2023] [Revised: 12/03/2023] [Accepted: 12/05/2023] [Indexed: 12/24/2023]
Abstract
BACKGROUND Neuroendocrine tumors (NETs) are rare tumors that arise from neuroendocrine cells and are the most common tumors of the appendix. NETs of the appendix usually cause no symptoms and often go unnoticed until they cause acute appendicitis or are discovered during an accidental appendectomy. As the trend towards the conservative treatment of acute appendicitis increases in the pediatric population, the question arises as to whether the majority of NETs go undetected and are only discovered at an advanced stage. The purpose of the proposed study is to review the incidence and outcomes of treatment for NETs of the appendix in children and include the data presented in the data pool for further review. METHODS From 1 January 2009 to 1 November 2023, a total of 6285 appendectomies were performed in two large pediatric centers in Croatia. After a retrospective review of the case records and histopathologic findings, a total of 31 children (0.49%) were diagnosed with NET of the appendix and included in the further analysis. The primary outcome of this study was the incidence and treatment outcome of pediatric patients diagnosed with NET of the appendix. Secondary outcomes included the patients' demographic, clinical, and laboratory data and the histopathologic characteristics of tumor species. RESULTS The overall incidence of NETs of the appendix was stable over the study years, with minor fluctuations. The median age of patients was 14 (interquartile range-IQR: 12, 16) years, with a female predominance (64.5%). The majority of patients (96.8%) presented with acute abdominal pain and underwent appendectomy because acute appendicitis was suspected. Acute appendicitis was confirmed by histopathology in 18 (58%) cases. NETs of the appendix were not detected preoperatively in any of the patients. Among patients with confirmed acute appendicitis, most (n = 14; 77.8%) were found to have non-perforated acute appendicitis. In most children, the tumor was located at the tip of the appendix (n = 18; 58.1%), and the majority of tumors had a diameter of less than 1 cm (n = 21, 67.7%). The mitotic count (n = 25, 80.6%) and Ki-67 proliferation index (n = 23, 74.2%) were low in most patients, so most tumors were classified as NET G1 (n = 25, 80.6%), while NET G2 and NET G3 were found in four (12.9%) and two (6.5%) patients, respectively. All children were treated with appendectomy only. The median follow-up time was 54 (IQR: 24, 95) months. CONCLUSIONS The incidence of appendiceal NET among pediatric patients is very low. NET occurs most frequently in adolescents, with a female predominance. Most tumors are less than 1 cm in diameter, located at the tip, and associated with non-perforated appendicitis. Appendectomy is the treatment of choice, and major surgery was not necessary in our cohort.
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Affiliation(s)
- Zenon Pogorelić
- Department of Pediatric Surgery, University Hospital of Split, 21 000 Split, Croatia;
- Department of Surgery, School of Medicine, University of Split, 21 000 Split, Croatia;
| | - Vladimir Ercegović
- Department of Surgery, School of Medicine, University of Split, 21 000 Split, Croatia;
| | - Marko Bašković
- Department of Pediatric Surgery, Children’s Hospital Zagreb, 10 000 Zagreb, Croatia;
- Scientific Centre of Excellence for Reproductive and Regenerative Medicine, School of Medicine, University of Zagreb, Šalata 3, 10 000 Zagreb, Croatia
| | - Miro Jukić
- Department of Pediatric Surgery, University Hospital of Split, 21 000 Split, Croatia;
- Department of Surgery, School of Medicine, University of Split, 21 000 Split, Croatia;
| | - Ivana Karaman
- Department of Pathology, Forensic Medicine and Cytology, University Hospital of Split, 21 000 Split, Croatia; (I.K.); (I.M.)
| | - Ivana Mrklić
- Department of Pathology, Forensic Medicine and Cytology, University Hospital of Split, 21 000 Split, Croatia; (I.K.); (I.M.)
- Department of Pathology, University of Split School of Medicine, 21 000 Split, Croatia
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Constantin M, Petrescu L, Mătanie C, Vrancianu CO, Niculescu AG, Andronic O, Bolocan A. The Vermiform Appendix and Its Pathologies. Cancers (Basel) 2023; 15:3872. [PMID: 37568688 PMCID: PMC10417615 DOI: 10.3390/cancers15153872] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2023] [Revised: 07/26/2023] [Accepted: 07/27/2023] [Indexed: 08/13/2023] Open
Abstract
The vermiform appendix is a muscular cylindrical structure originating near the junction of the cecum and ileum, averaging 9 cm (5-35 cm) in size. As the most mobile viscera, it can adopt several positions, the most common being the retrocecal position. Perceived as an atavistic organ lacking physiological relevance, the vermiform appendix appears to be involved in immune function, serving in the maturation of B lymphocytes and the production of immunoglobulin A, in endocrine function, excreting amines and hormones in the 2-3 mL of mucus secreted daily, and in digestive function, by storing beneficial bacteria from where they can recolonize the colon. With a lumen of about 6 mm, the vermiform appendix has a reduced storage capacity, so any blockage of the appendix with fecoliths (fecaliths), seeds derailed from the colon, or enlarged lymph nodes prevents drainage and intraluminal accumulation of secreted mucus. Unable to relax, the appendix wall severely limits its intraluminal volume, so mucus accumulation leads to inflammation of the appendix, known generically as appendicitis. In addition, the vermiform appendix may be the site of the development of neoplastic processes, which may or may not involve mucus production, some of which can significantly affect the standard of living and ultimately lead to death. In general, mucinous tumors may have a better prognosis than non-mucinous tumors. This review takes a comprehensive path, starting by describing the anatomy and embryology of the vermiform appendix and further detailing its inflammatory pathologies, pathologies related to congenital anomalies, and appendix tumors, thus creating an up-to-date framework for better understanding, diagnosis, and treatment of these health problems.
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Affiliation(s)
- Marian Constantin
- Institute of Biology of Romanian Academy, 060031 Bucharest, Romania;
- The Research Institute of the University of Bucharest, ICUB, 050095 Bucharest, Romania;
| | - Livia Petrescu
- Department of Anatomy, Animal Physiology and Biophysics, DAFAB, Faculty of Biology, University of Bucharest, 050095 Bucharest, Romania; (L.P.); (C.M.)
| | - Cristina Mătanie
- Department of Anatomy, Animal Physiology and Biophysics, DAFAB, Faculty of Biology, University of Bucharest, 050095 Bucharest, Romania; (L.P.); (C.M.)
| | - Corneliu Ovidiu Vrancianu
- The Research Institute of the University of Bucharest, ICUB, 050095 Bucharest, Romania;
- Microbiology—Immunology Department, Faculty of Biology, University of Bucharest, 050095 Bucharest, Romania
- National Institute of Research and Development for Biological Sciences, 296 Splaiul Independentei, District 6, 060031 Bucharest, Romania
| | - Adelina-Gabriela Niculescu
- The Research Institute of the University of Bucharest, ICUB, 050095 Bucharest, Romania;
- Department of Science and Engineering of Oxide Materials and Nanomaterials, Politehnica University of Bucharest, 011061 Bucharest, Romania
| | - Octavian Andronic
- University Emergency Hospital, Carol Davila University of Medicine and Pharmacy, 020021 Bucharest, Romania; (O.A.); (A.B.)
| | - Alexandra Bolocan
- University Emergency Hospital, Carol Davila University of Medicine and Pharmacy, 020021 Bucharest, Romania; (O.A.); (A.B.)
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Management and outcome of high-risk neuroendocrine tumors of the appendix in children; A systematic review. EUROPEAN JOURNAL OF SURGICAL ONCOLOGY 2023; 49:329-338. [PMID: 36372617 DOI: 10.1016/j.ejso.2022.10.021] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/22/2022] [Revised: 10/12/2022] [Accepted: 10/31/2022] [Indexed: 11/11/2022]
Abstract
This study systematically reviewed the literature to investigate the value of secondary surgery for children with a high-risk neuroendocrine tumor (NET) of appendix. A systematic search was performed in PubMed, Embase and Web of Science. All randomized controlled trials, cohort studies, and case series reporting on the management and outcomes of patients (<20 years) with a histopathologically proven NET of the appendix were eligible for inclusion. Two authors independently selected eligible articles, assessed risk of bias, and extracted data. The outcomes of patients with a high-risk NET treated with secondary surgery were compared to those treated without secondary surgery. Primary outcomes were recurrence rate and disease-free survival. The literature search yielded 667 articles, of which 29 were included. These studies reported on 1112 patients, of whom 145 (13%) had high-risk NET. Heterogeneity between studies was large and risk of bias was serious in 26 and moderate in three studies. Secondary surgery after primary appendectomy was performed in 64 of 145 patients (44%). Length of follow-up ranged between 0 and 612 months. In both treatment groups no recurrences were reported, and thus disease-free survival was 100%. Based on current literature, the value of secondary surgery for pediatric high-risk NET of the appendix may be questioned. However, evidence is scarce, of low-quality, and heterogeneity between studies is large. Large international studies with adequate follow-up are needed to generate high-quality evidence on this topic.
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Nesti C, Bräutigam 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, Ćwikła 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, Kaçmaz E, Kaemmerer D, Kaltsas G, Klimacek B, Knigge U, Kolasińska-Ćwikła A, Kolb W, Kos-Kudła B, Kunze CA, Landolfi S, La Rosa S, López 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, Siebenhüner AR, Tesselaar MET, Thalhammer MJ, Thiis-Evensen E, Toumpanakis C, Vandamme T, van den Berg JG, Vanoli A, van Velthuysen MLF, 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; 24:187-194. [PMID: 36640790 DOI: 10.1016/s1470-2045(22)00750-1] [Citation(s) in RCA: 22] [Impact Index Per Article: 22.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2022] [Revised: 12/06/2022] [Accepted: 12/06/2022] [Indexed: 01/13/2023]
Abstract
BACKGROUND Awareness of the potential global overtreatment of patients with appendiceal neuroendocrine tumours (NETs) of 1-2 cm in size by performing oncological resections is increasing, but the rarity of this tumour has impeded clear recommendations to date. We aimed to assess the malignant potential of appendiceal NETs of 1-2 cm in size in patients with or without right-sided hemicolectomy. METHODS In this retrospective cohort study, we pooled data from 40 hospitals in 15 European countries for patients of any age and Eastern Cooperative Oncology Group performance status with a histopathologically confirmed appendiceal NET of 1-2 cm in size who had a complete resection of the primary tumour between Jan 1, 2000, and Dec 31, 2010. Patients either had an appendectomy only or an appendectomy with oncological right-sided hemicolectomy or ileocecal resection. Predefined primary outcomes were the frequency of distant metastases and tumour-related mortality. Secondary outcomes included the frequency of regional lymph node metastases, the association between regional lymph node metastases and histopathological risk factors, and overall survival with or without right-sided hemicolectomy. Cox proportional hazards regression was used to estimate the relative all-cause mortality hazard associated with right-sided hemicolectomy compared with appendectomy alone. This study is registered with ClinicalTrials.gov, NCT03852693. FINDINGS 282 patients with suspected appendiceal tumours were identified, of whom 278 with an appendiceal NET of 1-2 cm in size were included. 163 (59%) had an appendectomy and 115 (41%) had a right-sided hemicolectomy, 110 (40%) were men, 168 (60%) were women, and mean age at initial surgery was 36·0 years (SD 18·2). Median follow-up was 13·0 years (IQR 11·0-15·6). After centralised histopathological review, appendiceal NETs were classified as a possible or probable primary tumour in two (1%) of 278 patients with distant peritoneal metastases and in two (1%) 278 patients with distant metastases in the liver. All metastases were diagnosed synchronously with no tumour-related deaths during follow-up. Regional lymph node metastases were found in 22 (20%) of 112 patients with right-sided hemicolectomy with available data. On the basis of histopathological risk factors, we estimated that 12·8% (95% CI 6·5 -21·1) of patients undergoing appendectomy probably had residual regional lymph node metastases. Overall survival was similar between patients with appendectomy and right-sided hemicolectomy (adjusted hazard ratio 0·88 [95% CI 0·36-2·17]; p=0·71). INTERPRETATION This study provides evidence that right-sided hemicolectomy is not indicated after complete resection of an appendiceal NET of 1-2 cm in size by appendectomy, that regional lymph node metastases of appendiceal NETs are clinically irrelevant, and that an additional postoperative exclusion of metastases and histopathological evaluation of risk factors is not supported by the presented results. These findings should inform consensus best practice guidelines for this patient cohort. FUNDING Swiss Cancer Research foundation.
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Affiliation(s)
- Cédric Nesti
- Department of Visceral Surgery and Medicine, Inselspital, Bern University Hospital, University of Bern, Bern, Switzerland
| | | | - Marta Benavent
- Department of Medical Oncology, University Hospital Virgen del Rocío, Instituto de Biomedicina De Sevilla, Seville, Spain
| | - Laura Bernal
- Department of Medical Oncology, University Hospital Virgen del Rocío, Instituto de Biomedicina De Sevilla, Seville, Spain
| | - Hessa Boharoon
- Neuroendocrine Tumour Unit-ENETS Centre of Excellence, Royal Free Hospital London, London, UK
| | - Johan Botling
- Department of Immunology, Genetics and Pathology, Uppsala University, Uppsala, Sweden
| | - Antonin Bouroumeau
- Division of Clinical Pathology, Diagnostic Department, Geneva University Hospitals, Geneva, Switzerland
| | - Iva Brcic
- Diagnostic and Research Institute of Pathology, Medical University of Graz, Graz, Austria
| | - Maximilian Brunner
- Department of Surgery, University Hospital of Friedrich-Alexander University Erlangen-Nuernberg, Erlangen, Germany
| | - Guillaume Cadiot
- Service d'Hépato-gastroentérologie et d'Oncologie Digestive, Université Reims Champagne Ardenne, CHU de Reims, Reims, France
| | - Maria Camara
- Pathology Department, Hospital Universitario 12 de Octubre, Imas12, UCM, Madrid, Spain
| | - Emanuel Christ
- Department of Endocrinology, Diabetology and Metabolism, ENETS Center of Excellence, University Hospital of Basel, Basel, Switzerland
| | - Thomas Clerici
- Klinik für Allgemein-, Viszeral-, Endokrin- und Transplantationschirurgie, Kantonsspital St Gallen, St Gallen, Switzerland
| | - Ashley K Clift
- Department of Surgery and Cancer, Imperial College London, London, UK
| | - Hamish Clouston
- Colorectal and Peritoneal Oncology Centre, The Christie NHS Foundation Trust, Manchester, UK
| | - Lorenzo Cobianchi
- Department of Clinical, Diagnostic and Pediatric Sciences, University of Pavia, Pavia, Italy; Department of General Surgery, IRCCS Policlinico San Matteo Fondazione, Pavia, Italy
| | | | - Kosmas Daskalakis
- 1st Department of Propaedeutic Internal Medicine, Endocrine Unit, National and Kapodistrian University of Athens, ENETS Center of Excellence, Athens, Greece
| | - Andrea Frilling
- Department of Surgery and Cancer, Imperial College London, London, UK
| | | | - Simona Grozinsky-Glasberg
- Neuroendocrine Tumor Unit, ENETS Center of Excellence, Department of Endocrinology and Metabolism, Hadassah Medical Organization and Faculty of Medicine, The Hebrew University of Jerusalem, Jerusalem, Israel
| | - Jorge Hernando
- Medical Oncology Department, Vall d'Hebron University Hospital-Vall d'Hebron Institute of Oncology, Barcelona, Spain
| | | | - Johannes Hofland
- Department of Internal Medicine, Section of Endocrinology ENETS Center of Excellence and Erasmus Cancer Institute, Erasmus MC, Rotterdam, Netherlands
| | - Pernille Holmager
- ENETS Neuroendocrine Tumor Centre of Excellence, Rigshospitalet, Copenhagen University Hospital, Copenhagen, Denmark; Department of Endocrinology, Rigshospitalet, Copenhagen University Hospital, Copenhagen, Denmark
| | - Frediano Inzani
- General Pathology, Department of Woman and Child Health Science and Public Health, Fondazione Policlinico Universitario A Gemelli IRCCS, Rome, Italy; Roma European NeuroEndocrine Tumor Society Center of Excellence, Rome, Italy
| | - Henning Jann
- Hepatology and Gastroenterology, Charité University Medicine Berlin, Berlin, Germany
| | - Paula Jimenez-Fonseca
- Department of Medical Oncology, Hospital Universitario Central de Asturias, ISPA, Oviedo, Spain
| | - Enes Kaçmaz
- Department of Surgery, Amsterdam UMC, University of Amsterdam, Amsterdam, Netherlands
| | - Daniel Kaemmerer
- Department of General and Visceral Surgery, Zentralklinik Bad Berka, Bad Berka, Germany
| | - Gregory Kaltsas
- 1st Department of Propaedeutic Internal Medicine, Endocrine Unit, National and Kapodistrian University of Athens, ENETS Center of Excellence, Athens, Greece
| | - Branislav Klimacek
- Department of Surgery, Endocrine Surgical Unit, Uppsala University, Uppsala, Sweden
| | - Ulrich Knigge
- ENETS Neuroendocrine Tumor Centre of Excellence, Rigshospitalet, Copenhagen University Hospital, Copenhagen, Denmark; Department of Endocrinology, Rigshospitalet, Copenhagen University Hospital, Copenhagen, Denmark; Department of Surgery, Rigshospitalet, Copenhagen University Hospital, Copenhagen, Denmark
| | | | - Walter Kolb
- Klinik für Allgemein-, Viszeral-, Endokrin- und Transplantationschirurgie, Kantonsspital St Gallen, St Gallen, Switzerland
| | - Beata Kos-Kudła
- Department of Endocrinology and Neuroendocrine Neoplasms and Department of Endocrinology and Pathophysiology, Medical University of Silesia, Katowice, Poland
| | - Catarina Alisa Kunze
- Institute of Pathology, Charité-Universitätsmedizin Berlin, corporate member of Freie Universität Berlin and Humboldt-Universität zu Berlin, Berlin, Germany
| | - Stefania Landolfi
- Pathology Department, Vall d'Hebron University Hospital, Barcelona, Spain
| | - Stefano La Rosa
- Institute of Pathology, Department of Laboratory Medicine and Pathology, University of Lausanne, Lausanne, Switzerland; Unit of Pathology, Department of Medicine and Surgery, University of Insubria, Varese, Italy
| | - Carlos López López
- Medical Oncology Department, Hospital Universitario Marqués de Valdecilla, IDIVAL, Santander, Spain
| | - Kerstin Lorenz
- Department of Visceral, Vascular, and Endocrine Surgery, Martin-Luther University of Halle-Wittenberg, Halle, Germany
| | - Maurice Matter
- Department of Visceral Surgery, Lausanne University Hospital, University of Lausanne, Lausanne, Switzerland
| | - Peter Mazal
- Department of Clinical Pathology, Medical University of Vienna, General Hospital Vienna, Vienna, Austria
| | | | | | | | - Kira Oleinikov
- Neuroendocrine Tumor Unit, ENETS Center of Excellence, Department of Endocrinology and Metabolism, Hadassah Medical Organization and Faculty of Medicine, The Hebrew University of Jerusalem, Jerusalem, Israel
| | - Lorenzo A Orci
- Division of Abdominal Surgery, Department of Surgery, Geneva University Hospitals, Geneva, Switzerland
| | - Francesco Panzuto
- Department of Medical-Surgical Sciences and Translational Medicine, Sapienza University of Rome, Rome, Italy; Digestive Disease Unit, Sant'Andrea University Hospital, ENETS Center of Excellence, Rome, Italy
| | - Marianne Pavel
- Department of Medicine 1, Friedrich Alexander University Erlangen-Nürnberg, Erlangen, Germany
| | - Marine Perrier
- Service d'Hépato-gastroentérologie et d'Oncologie Digestive, Université Reims Champagne Ardenne, CHU de Reims, Reims, France
| | - Henrik Mikael Reims
- Department of Pathology, Oslo University Hospital, Rikshospitalet, Oslo, Norway
| | - Guido Rindi
- Unit of Head and Neck, Lung, and Endocrine Pathology, Department of Woman and Child Health Science and Public Health, Fondazione Policlinico Universitario A Gemelli IRCCS, Rome, Italy; Roma European NeuroEndocrine Tumor Society Center of Excellence, Rome, Italy; Section of Anatomic Pathology, Department of Life Sciences and Public Health, Università Cattolica del Sacro Cuore, Rome, Italy
| | - Anja Rinke
- Department of Gastroenterology and Endocrinology, UKGM, Marburg, Germany; Philipps University Marburg, Marburg, Germany
| | - Maria Rinzivillo
- Digestive Disease Unit, Sant'Andrea University Hospital, ENETS Center of Excellence, Rome, Italy
| | - Xavier Sagaert
- Translational Cell & Tissue Research, KU Leuven, Leuven, Belgium
| | - Ilker Satiroglu
- Department of Visceral, Vascular, and Endocrine Surgery, Martin-Luther University of Halle-Wittenberg, Halle, Germany
| | - Andreas Selberherr
- Division of Visceral Surgery, Department of General Surgery, Medical University of Vienna, Vienna, Austria
| | - Alexander R Siebenhüner
- Klinik für Medizinische Onkologie und Hämatologie, Universitätsspital Zürich und Universität Zürich, Zurich, Switzerland; Departement Medizinische Onkologie, Kantonsspital Schaffhausen, Schaffhausen, Switzerland
| | - Margot E T Tesselaar
- Department of Medical Oncology, The Netherlands Cancer Institute, Amsterdam, Netherlands
| | - Michael J Thalhammer
- Department of Surgery, Division of Visceral and Transplant Surgery, Medical University of Graz, Graz, Austria
| | - Espen Thiis-Evensen
- Department of Gastroenterology, Oslo University Hospital, Rikshospitalet, Oslo, Norway
| | - Christos Toumpanakis
- Neuroendocrine Tumour Unit-ENETS Centre of Excellence, Royal Free Hospital London, London, UK
| | | | - José G van den Berg
- Department of Pathology, The Netherlands Cancer Institute, Amsterdam, Netherlands
| | - Alessandro Vanoli
- Unit of Anatomic Pathology, Department of Molecular Medicine, University of Pavia, Pavia, Italy; Unit of Anatomic Pathology, IRCCS Policlinico San Matteo Foundation, Pavia, Italy
| | | | - Chris Verslype
- Clinical Digestive Oncology, University Hospitals Leuven, Belgium
| | | | | | - John Ramage
- University of Winchester, Winchester, UK; Hampshire Hospital, Basingstoke, UK
| | - Marcel Zwahlen
- Institute of Social and Preventive Medicine, University of Bern, Bern, Switzerland
| | - Aurel Perren
- Institute of Pathology, University of Bern, Bern, Switzerland
| | - Reto M Kaderli
- Department of Visceral Surgery and Medicine, Inselspital, Bern University Hospital, University of Bern, Bern, Switzerland.
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Duess JW, Lange A, Zeidler J, Blaser J, Dingemann C, Ure BM, Lacher M, Gosemann JH, Hofmann AD. Appendiceal Carcinoids in Children-Prevalence, Treatment and Outcome in a Large Nationwide Pediatric Cohort. Medicina (B Aires) 2022; 59:medicina59010080. [PMID: 36676704 PMCID: PMC9863284 DOI: 10.3390/medicina59010080] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2022] [Revised: 12/19/2022] [Accepted: 12/22/2022] [Indexed: 12/31/2022] Open
Abstract
Background and Objectives: Appendiceal carcinoids are rare neuroendocrine tumors and mainly found incidentally during histopathological examination following appendectomy. This observational cohort study was performed to determine the prevalence, treatment modalities and outcomes in children diagnosed with an appendiceal carcinoid tumor. Materials and Methods: Data from the largest German statutory health insurance "Techniker Krankenkasse" were analyzed within an 8-year period: January 2010 to December 2012 and January 2016 to December 2020. Patient characteristics, surgical technique, type of surgical department, diagnostic management, and postoperative morbidity were analyzed. Results: Out of 40.499 patients following appendectomy, appendiceal carcinoids were found in 44 children, resulting in a prevalence of 0.11%. Mean age at appendectomy was 14.7 (±2.6) years. Laparoscopic approach was performed in 40 (91%) cases. Right-sided hemicolectomy was performed in 8 (18%) patients. Additional diagnostic work-up (CT and MRI) was recorded in 5 (11%) children. Conclusions: This large nationwide pediatric study shows that 1 in 1000 patients was found to have a neuroendocrine tumor of the appendix (prevalence 0.11%), emphasizing its low prevalence in the pediatric age group. The majority of patients were treated with appendectomy only. However, treatment modalities are still variable. Longer follow-up analyses are needed to evaluate published guidelines and recommendations to aim for a limited surgical approach.
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Affiliation(s)
- Johannes Wolfgang Duess
- Department of Pediatric Surgery, University of Leipzig, 04103 Leipzig, Germany
- Correspondence: ; Tel.: +49-341-97-26400; Fax: +49-341-97-26409
| | - Ansgar Lange
- Center for Health Economics Research Hannover (CHERH), Leibniz University Hannover, 30159 Hannover, Germany
| | - Jan Zeidler
- Center for Health Economics Research Hannover (CHERH), Leibniz University Hannover, 30159 Hannover, Germany
| | - Jochen Blaser
- Techniker Health Insurance, Representative Officer of Lower Saxony, 30159 Hannover, Germany
| | - Carmen Dingemann
- Department of Pediatric Surgery, Medical School Hannover, 30625 Hannover, Germany
| | - Benno M. Ure
- Department of Pediatric Surgery, Medical School Hannover, 30625 Hannover, Germany
| | - Martin Lacher
- Department of Pediatric Surgery, University of Leipzig, 04103 Leipzig, Germany
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7
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Castle JT, Levy BE, Chauhan A. Pediatric Neuroendocrine Neoplasms: Rare Malignancies with Incredible Variability. Cancers (Basel) 2022; 14:cancers14205049. [PMID: 36291833 PMCID: PMC9599522 DOI: 10.3390/cancers14205049] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2022] [Revised: 10/07/2022] [Accepted: 10/13/2022] [Indexed: 11/16/2022] Open
Abstract
Neuroendocrine neoplasms (NENs) encompass a variety of neuroendocrine tumors (NETs) and neuroendocrine carcinomas (NECs) which can arise anywhere in the body. While relatively rare in the pediatric population, the incidence of NENs has increased in the past few decades. These neoplasms can be devastating if not diagnosed and treated early, however, symptoms are variable and can be indolent for many years. There is a reported median of 10 years from the appearance of the first symptoms to time of diagnosis. Considering some of these neoplasms have a mortality rate as high as 90%, it is crucial healthcare providers are aware of NENs and remain vigilant. With better provider education and easily accessible resources for information about these neoplasms, awareness can be improved leading to earlier disease recognition and diagnosis. This manuscript aims to provide an overview of both the most common NENs as well as the rarer NENs with high lethality in the pediatric population. This review provides up to date evidence and recommendations, encompassing recent changes in classification and advances in treatment modalities, including recently completed and ongoing clinical trials.
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Affiliation(s)
- Jennifer T. Castle
- Department of Surgery, Markey Cancer Center, University of Kentucky, 800 Rose Street, Lexington, KY 40536, USA
| | - Brittany E. Levy
- Department of Surgery, University of Kentucky, 800 Rose Street, Lexington, KY 40536, USA
| | - Aman Chauhan
- Department of Internal Medicine-Medical Oncology, Markey Cancer Center, University of Kentucky, 800 Rose Street, Lexington, KY 40536, USA
- Correspondence: or
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8
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Yalçın B, Karnak İ, Orhan D, Oğuz B, Aydın B, Kurucu N, Varan A, Kutluk T. Paediatric appendiceal neuroendocrine tumours: a review of 33 cases from a single center. ANZ J Surg 2021; 92:742-746. [PMID: 34664383 DOI: 10.1111/ans.17284] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/12/2021] [Accepted: 10/01/2021] [Indexed: 12/29/2022]
Abstract
BACKGROUND Appendiceal neurendocrine tumours (NETs) are rare neoplasms and diagnosis is commonly incidental following appendectomy. We aimed to review our experience with appendiceal NETs. METHODS Records of children with appendiceal NETs were reviewed and data concerning demographic characteristics, clinical findings, surgical procedures, histopathological findings, management and outcomes were recorded. RESULTS Between 1985 and 2021, 33 cases with appendiceal NETs (median age 11.8 years, range 7.8-16; male/female = 10/23) were identified. All but one patients presented with abdominal pain, six had vomiting, four had fever and they underwent appendectomies with presumed diagnosis of acute appendicitis. Abscess drainage and appendectomy was performed in a 16-year-old girl for suspected right ovarian mass, and tumour was positive in the omentum. Histopathological diagnosis was classical carcinoid tumour (NET) in all cases. Median tumour size was 0.9 cm (n = 26, range, 0.1-3.5 cm); tumours were ≤1 cm in 19 cases, 2 cm in one, 3.5 cm in another case. Tumours were located in the tip (n = 11), body (n = 6) and base of appendix (n = 1) (in others data unavailable). In 28 patients with data, tumour extended to submucosa in five, to tunica muscularis in seven, to subserosa in six, to serosa in six, to mesoappendix in three, to periappendiceal fat in one. Three cases were lost to follow-up, 31 cases were alive (median follow-up 53 months). CONCLUSIONS Paediatric appendiceal NETs do not behave aggressively and appendectomy alone is sufficient for tumours ≤2 cm regardless of local invasion. The need for further extensive surgery in tumours >2 cm also remains controversial.
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Affiliation(s)
- Bilgehan Yalçın
- Department of Pediatric Oncology, Faculty of Medicine, Hacettepe University, Ankara, Turkey
| | - İbrahim Karnak
- Department of Pediatric Surgery, Faculty of Medicine, Hacettepe University, Ankara, Turkey
| | - Diclehan Orhan
- Department of Pathology, Faculty of Medicine, Hacettepe University, Ankara, Turkey
| | - Berna Oğuz
- Department of Radiology, Faculty of Medicine, Hacettepe University, Ankara, Turkey
| | - Burça Aydın
- Department of Pediatric Oncology, Faculty of Medicine, Hacettepe University, Ankara, Turkey
| | - Nilgün Kurucu
- Department of Pediatric Oncology, Faculty of Medicine, Hacettepe University, Ankara, Turkey
| | - Ali Varan
- Department of Pediatric Oncology, Faculty of Medicine, Hacettepe University, Ankara, Turkey
| | - Tezer Kutluk
- Department of Pediatric Oncology, Faculty of Medicine, Hacettepe University, Ankara, Turkey
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9
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Management of appendiceal neuroendocrine tumors in the light of new guidelines. Ir J Med Sci 2021; 191:1133-1137. [PMID: 34218410 DOI: 10.1007/s11845-021-02707-y] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/22/2021] [Accepted: 06/26/2021] [Indexed: 11/27/2022]
Abstract
PURPOSE Appendiceal neuroendocrine tumors (ANETs) are the most common in the appendix, detected in histopathological appendectomy specimens, which are resected for acute appendicitis. If tumor detection does not show signs of metastatic disease or obvious features of carcinoid syndrome, preoperative diagnosis remains a challenge. However, the treatment and follow-up algorithm change over time. In our study, we aimed to present 10 years of diagnostic and management experience. MATERIAL AND METHODS A retrospective study of all patients who underwent emergency appendectomy, with the intention to treat clinically acute appendicitis at Bakirkoy Dr. Sadi Konuk Hospital (Istanbul, Turkey), was undertaken. Patients with diagnoses other than ANETs were excluded. Age, gender, preoperative clinical findings, operative procedure, and histopathological results identified as ANETs were evaluated. RESULTS ANETs were detected in 24 patients (0.42%) in the histopathological examination of 5720 appendectomy specimens between December 2011 and October 2020. Mean age of patients was 30 years, with 58.3% female. The majority were located at the tip of appendix (62.5%). Eleven patients (45.83%) were graded as T1, one patient (4.16%) as T2, 11 (41.83%) as T3, and one patient (4.16%) as T4. Secondary hemicolectomy was performed in four patients. Median postoperative follow-up was 43 (17-108) months. CONCLUSION In addition, ANETs are rare and largely detected by chance; therefore, precise examination of routine appendectomy specimens is essential for diagnosis. Accurate tumor staging, in light of new algorithms, has an important place in follow-up and treatment management.
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10
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Noor M, Huber AR, Cates JMM, Gonzalez RS. Risk factors for progression of appendiceal neuroendocrine tumours: low-stage tumours <5 mm appear to be overwhelmingly indolent and may merit a separate designation. Histopathology 2021; 79:416-426. [PMID: 33754384 DOI: 10.1111/his.14369] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2021] [Revised: 03/04/2021] [Accepted: 03/20/2021] [Indexed: 12/15/2022]
Abstract
AIMS Appendiceal well-differentiated neuroendocrine tumours (NETs) are usually incidental and clinically benign. Several studies have reported different risk factors for nodal metastasis. The aim of this study was to investigate our appendiceal NETs (App-NETs) to determine the factors associated with malignant behaviour. METHODS AND RESULTS For 120 App-NETs, we reviewed the clinical presentation and follow-up, including serum chromogranin A (CgA) levels, and compiled several microscopic variables. Pathological factors were compared with nodal status and time to biochemical recurrence (elevated serum CgA level) by the use of Cox regression. We also reviewed similar App-NET data in the Surveillance, Epidemiology, and End Results (SEER) Programme. Among our 120 cases, seven patients had positive lymph nodes, and nine developed subsequent elevation of CgA levels; none developed distant metastases or died of disease. Only three patients had grade 2 NETs; none had nodal disease, and one developed an elevated CgA level. Increasing tumour size was associated with an increased risk of nodal disease [odds ratio (OR) 4.99, P = 0.0055). All seven node-positive cases were ≥13 mm. Factors associated with elevated CgA levels included age (OR 1.04, P = 0.041), pT4 disease (OR 10.22, P = 0.033), and nodal disease (OR 24.0, P = 0.012), but not size (OR 2.13, P = 0.072). Of the 1492 reported App-NETs in the SEER database with data on tumour size, 137 (9%) were pN1; only five of these (4%) were coded as being <5 mm. CONCLUSIONS Small (<5 mm) App-NETs that do not invade the serosa or mesoappendix appear to be overwhelmingly benign and low-grade, requiring neither Ki67 staining nor synoptic reporting. Given their indolent behaviour, different nomenclature or staging may be more appropriate for these NETs.
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Affiliation(s)
- Mushal Noor
- Department of Pathology, University of Rochester Medical Center, Rochester, NY, USA
| | - Aaron R Huber
- Department of Pathology, University of Rochester Medical Center, Rochester, NY, USA
| | - Justin M M Cates
- Department of Pathology, Vanderbilt University Medical Center, Nashville, TN, USA
| | - Raul S Gonzalez
- Department of Pathology, Beth Israel Deaconess Medical Center, Boston, MA, USA
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11
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Mishra PR, Stringer MD. Appendiceal carcinoid tumors: a plea for critical reporting. Pediatr Surg Int 2020; 36:539-540. [PMID: 31907608 DOI: 10.1007/s00383-019-04608-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 12/06/2019] [Indexed: 10/25/2022]
Affiliation(s)
- Prabal R Mishra
- Department of Paediatric Surgery, Wellington Children's Hospital, Wellington, 6021, New Zealand.
| | - Mark D Stringer
- Department of Paediatric Surgery, Wellington Children's Hospital, Wellington, 6021, New Zealand
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12
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Abstract
PURPOSE OF REVIEW To synthesize the current knowledge and guidelines on the management of appendiceal neuroendocrine neoplasms (ANENs). RECENT FINDINGS Most recent guidelines are essentially based on heterogeneous retrospective series. With the advent of a more precise classification of neuroendocrine neoplasms, this heterogeneity is rightly criticized and many 'grey areas' are now debated in expert literature. The only way to solve these issues is through the conduct of large prospective multicentre studies, but this seems somewhat utopian, given the rarity of this disease. SUMMARY ANENs are rare tumours with a favourable prognosis, and mainly diagnosed in young patients. They are predominantly localized, and diagnosed incidentally on appendectomy. This procedure is curative for the vast majority of patients but ANENs can relapse even a significant time after the first diagnosis. Identifying the risks for recurrence is challenging, with some factors thought to be predictive of nodal involvement. The presence of one or more of these factors justifies an oncological radicalization of the surgical procedure (right hemicolectomy with lymphadenectomy). However, the beneficial impact of this surgical procedure on survival is still unproven.
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13
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Kinnear N, Heijkoop B, Bramwell E, Frazzetto A, Noll A, Patel P, Hennessey D, Otto G, Dobbins C, Sammour T, Moore J. Communication and management of incidental pathology in 1,214 consecutive appendicectomies; a cohort study. Int J Surg 2019; 72:185-191. [PMID: 31683040 DOI: 10.1016/j.ijsu.2019.10.025] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/17/2019] [Revised: 10/08/2019] [Accepted: 10/23/2019] [Indexed: 12/29/2022]
Abstract
BACKGROUND Important incidental pathology requiring further action is commonly found during appendicectomy, macro- and microscopically. We aimed to determine whether the acute surgical unit (ASU) model improved the management and disclosure of these findings. METHODS An ASU model was introduced at our institution on 01/08/2012. In this retrospective cohort study, all patients undergoing appendicectomy 2.5 years before (Traditional group) or after (ASU group) this date were compared. The primary outcomes were rates of appropriate management of the incidental findings, and communication of the findings to the patient and to their general practitioner (GP). RESULTS 1,214 patients underwent emergency appendicectomy; 465 in the Traditional group and 749 in the ASU group. 80 (6.6%) patients (25 and 55 in each respective period) had important incidental findings. There were 24 patients with benign polyps, 15 with neuro-endocrine tumour, 11 with endometriosis, 8 with pelvic inflammatory disease, 8 Enterobius vermicularis infection, 7 with low grade mucinous cystadenoma, 3 with inflammatory bowel disease, 2 with diverticulitis, 2 with tubo-ovarian mass, 1 with secondary appendiceal malignancy and none with primary appendiceal adenocarcinoma. One patient had dual pathologies. There was no difference between the Traditional and ASU group with regards to communication of the findings to the patient (p = 0.44) and their GP (p = 0.27), and there was no difference in the rates of appropriate management (p = 0.21). CONCLUSION The introduction of an ASU model did not change rates of surgeon-to-patient and surgeon-to-GP communication nor affect rates of appropriate management of important incidental pathology during appendectomy.
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Affiliation(s)
- Ned Kinnear
- Dept of Surgery, Lyell McEwin Hospital, Adelaide, Australia; Dept of Surgery, Port Augusta Hospital, Port Augusta, Australia; Adelaide Medical School, University of Adelaide, Adelaide, Australia.
| | | | - Eliza Bramwell
- Dept of Surgery, Port Augusta Hospital, Port Augusta, Australia
| | - Alannah Frazzetto
- Dept of Surgery, Port Augusta Hospital, Port Augusta, Australia; Adelaide Medical School, University of Adelaide, Adelaide, Australia
| | - Amy Noll
- Dept of Surgery, Port Augusta Hospital, Port Augusta, Australia; Adelaide Medical School, University of Adelaide, Adelaide, Australia
| | - Prajay Patel
- Dept of Surgery, Port Augusta Hospital, Port Augusta, Australia; Adelaide Medical School, University of Adelaide, Adelaide, Australia
| | | | - Greg Otto
- Dept of Surgery, Lyell McEwin Hospital, Adelaide, Australia
| | | | - Tarik Sammour
- Dept of Surgery, Royal Adelaide, Hospital, Adelaide, Australia; Dept of Surgery, Faculty of Medical and Health Sciences, University of Adelaide, Adelaide, Australia
| | - James Moore
- Dept of Surgery, Royal Adelaide, Hospital, Adelaide, Australia; Dept of Surgery, Faculty of Medical and Health Sciences, University of Adelaide, Adelaide, Australia
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14
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Akova F, Aydin E, Nur Eray Y, Toksoy N, Yalcin S, Altinay S, Tetikkurt US. Long-term outcomes in pediatric appendiceal carcinoids: Turkey experience. Eur J Pediatr 2018; 177:1845-1850. [PMID: 30255450 DOI: 10.1007/s00431-018-3258-z] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/01/2018] [Revised: 05/17/2018] [Accepted: 09/17/2018] [Indexed: 10/28/2022]
Abstract
The tendency of non-operative management of appendicitis let us explore the natural history of appendiceal carcinoids, compare them with appendicitis patients, and determine the possibility of deciding the extent of the surgery and post-operative follow-up on behalf of the intraoperative findings. A retrospective review was performed of patients with appendicitis between 2009 and 2017. Of 2781 patients, 10 (0.36%) were diagnosed with appendiceal carcinoids. Sixty percent were female with an average age of 13.10 ± 1.73. The mean tumor size was 0.97 ± 0.34 cm with 70% located at the tip. Majority had an insular pattern (n = 9), six had subserosal fat tissue invasion, one had extension to mesoappendix, one had vascular invasion, and two had lymphatic invasion. The average mitotic index was 3.20 ± 1.40/50HPF, and Ki 67 activity was 3 ± 1.7%. The mean follow-up period was 66.40 ± 25.92 months. Patients were further evaluated with ultrasonography (n = 10), CT (n = 3), and MRI (n = 10). Serum markers including chromogranin (n = 9), NSE (n = 6), and 5-HIAA (n = 6) were normal. None required further treatment and had any symptoms of carcinoid syndromes or recurrences post-operatively.Conclusion: Other than appendectomy, no additional surgery or follow-up is required in appendiceal carcinoids less than 1.5 cm in size, regardless of the lymphoid or vascular invasion. What is Known: • The treatment of patients with a 1-2-cm tumor is not clear in both the pediatric and adult populations, and additional resection is needed. • Patients are monitored post-operatively with radiological and/or biochemical testing. What is New: • Appendectomy is curative for tumors less than 2 cm. • No additional surgery or follow-up is required in appendiceal carcinoids less than 1.5 cm in size regardless of the lymphoid or vascular invasion.
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Affiliation(s)
- Fatih Akova
- Pediatric Surgery Department, Biruni University, Istanbul, Turkey
| | - Emrah Aydin
- Pediatric Surgery Department, Bahcelievler State Hospital, Istanbul, Turkey. .,Pediatric Surgery Department, Bagcilar Training & Research Hospital, Istanbul, Turkey. .,Pediatric Surgery Department, School of Medicine, Koc University, Istanbul, Turkey.
| | - Y Nur Eray
- Pediatric Surgery Department, Bagcilar Training & Research Hospital, Istanbul, Turkey
| | - Nurseli Toksoy
- Pediatric Surgery Department, Bagcilar Training & Research Hospital, Istanbul, Turkey
| | - Senay Yalcin
- Department of Pathology, Bagcilar Training & Research Hospital, Istanbul, Turkey
| | - Serdar Altinay
- Department of Pathology, Selcuk University, Konya, Turkey
| | - Umit Seza Tetikkurt
- Department of Pathology, Bagcilar Training & Research Hospital, Istanbul, Turkey
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15
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Abadía Barnó P, Rivilla F, Barquín Yagüez J, Abadía Barnó M, García Pérez JC. Appendiceal Carcinoid Tumor in Children: a Conservative Surgical Approach. Indian J Surg 2018. [DOI: 10.1007/s12262-017-1634-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022] Open
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16
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Ariotti R, Partelli S, Muffatti F, Andreasi V, Della Sala F, Falconi M. How should incidental NEN of the pancreas and gastrointestinal tract be followed? Rev Endocr Metab Disord 2018. [PMID: 29527619 DOI: 10.1007/s11154-018-9445-4] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
Neuroendocrine gastro-entero-pancreatic neoplasms (GEP-NENs) constitute a heterogeneous group of tumors, whose incidence has increased over the years. The most frequent site for primary disease is the stomach followed by small and large intestine, and pancreas. In the last decade, a dramatic growing in the incidence of small, incidental GEP-NENs has been recorded. In parallel, an increasing attitude toward more conservative approaches instead of surgical management has being widely spreading. This is particularly true for small, asymptomatic, pancreatic NEN as for these tumor forms an active surveillance has proven to be safe and feasible. Primary site and biological features of the neoplasms lead to different strategies and indications for surveillance and follow-up. This review focuses on the current evidence on modality and timing of surveillance and conservative treatment of incidentally discovered lesions.
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Affiliation(s)
- Riccardo Ariotti
- Pancreatic Surgery Unit, Pancreas Translational & Clinical Research Center, San Raffaele Scientific Institute, "Vita-Salute" University, Via Olgettina 60, 20132, Milan, Italy
| | - Stefano Partelli
- Pancreatic Surgery Unit, Pancreas Translational & Clinical Research Center, San Raffaele Scientific Institute, "Vita-Salute" University, Via Olgettina 60, 20132, Milan, Italy
| | - Francesca Muffatti
- Pancreatic Surgery Unit, Pancreas Translational & Clinical Research Center, San Raffaele Scientific Institute, "Vita-Salute" University, Via Olgettina 60, 20132, Milan, Italy
| | - Valentina Andreasi
- Pancreatic Surgery Unit, Pancreas Translational & Clinical Research Center, San Raffaele Scientific Institute, "Vita-Salute" University, Via Olgettina 60, 20132, Milan, Italy
| | - Francesca Della Sala
- Pancreatic Surgery Unit, Pancreas Translational & Clinical Research Center, San Raffaele Scientific Institute, "Vita-Salute" University, Via Olgettina 60, 20132, Milan, Italy
| | - Massimo Falconi
- Pancreatic Surgery Unit, Pancreas Translational & Clinical Research Center, San Raffaele Scientific Institute, "Vita-Salute" University, Via Olgettina 60, 20132, Milan, Italy.
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17
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18
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Abstract
Neuroendocrine tumor (NET) of the appendix is the most common gastrointestinal epithelial tumor in children. The utility of serum markers or the indication for hemicolectomy has not been established in children. In 45 children diagnosed with appendiceal NET, 89% NETs were incidentally found following appendectomy performed for suspected acute appendicitis. The median age was 12 years, and 56% patients were female. Postoperative somatostatin scan (n=5), serum chromogranin A (n=4), and urine 5-HIAA (n=9) were all within normal limits. Pathology slides of 35 patients showed mesoappendiceal invasion in 29% patients, and vascular invasion in 6% patients. Seven patients (16%) underwent hemicolectomy for invasion of mesoappendix (n=5), tumor near the resection margin (n=1), and tumor size 1.5 cm with vascular invasion (n=1). Only 2 hemicolectomy specimens showed disease: one in the appendiceal stump and the other as a micrometastasis in a mesenteric lymph node. There were no recurrences and all patients were alive and without evidence of disease at last follow-up. Pediatric appendiceal NET tends to have a benign clinical course with excellent prognosis. In the absence of carcinoid syndrome, postoperative scans and serum biomarkers do not seem to be useful. With completely resected tumors, the indication for hemicolectomy is unclear.
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19
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Gorter RR, Eker HH, Gorter-Stam MAW, Abis GSA, Acharya A, Ankersmit M, Antoniou SA, Arolfo S, Babic B, Boni L, Bruntink M, van Dam DA, Defoort B, Deijen CL, DeLacy FB, Go PM, Harmsen AMK, van den Helder RS, Iordache F, Ket JCF, Muysoms FE, Ozmen MM, Papoulas M, Rhodes M, Straatman J, Tenhagen M, Turrado V, Vereczkei A, Vilallonga R, Deelder JD, Bonjer J. Diagnosis and management of acute appendicitis. EAES consensus development conference 2015. Surg Endosc 2016; 30:4668-4690. [PMID: 27660247 PMCID: PMC5082605 DOI: 10.1007/s00464-016-5245-7] [Citation(s) in RCA: 218] [Impact Index Per Article: 27.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2016] [Accepted: 09/09/2016] [Indexed: 02/08/2023]
Abstract
Unequivocal international guidelines regarding the diagnosis and management of patients with acute appendicitis are lacking. The aim of the consensus meeting 2015 of the EAES was to generate a European guideline based on best available evidence and expert opinions of a panel of EAES members. After a systematic review of the literature by an international group of surgical research fellows, an expert panel with extensive clinical experience in the management of appendicitis discussed statements and recommendations. Statements and recommendations with more than 70 % agreement by the experts were selected for a web survey and the consensus meeting of the EAES in Bucharest in June 2015. EAES members and attendees at the EAES meeting in Bucharest could vote on these statements and recommendations. In the case of more than 70 % agreement, the statement or recommendation was defined as supported by the scientific community. Results from both the web survey and the consensus meeting in Bucharest are presented as percentages. In total, 46 statements and recommendations were selected for the web survey and consensus meeting. More than 232 members and attendees voted on them. In 41 of 46 statements and recommendations, more than 70 % agreement was reached. All 46 statements and recommendations are presented in this paper. They comprise topics regarding the diagnostic work-up, treatment indications, procedural aspects and post-operative care. The consensus meeting produced 46 statements and recommendations on the diagnostic work-up and management of appendicitis. The majority of the EAES members supported these statements. These consensus proceedings provide additional guidance to surgeons and surgical residents providing care to patients with appendicitis.
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Affiliation(s)
- Ramon R Gorter
- Department of Surgery, VU University Medical Centre, Amsterdam, The Netherlands.
- Department of Surgery, Red Cross Hospital, Beverwijk, The Netherlands.
- Department of Pediatric Surgery, VU University Medical Centre, P.O. Box 22660, 1100 DD, Amsterdam, The Netherlands.
| | - Hasan H Eker
- Department of Surgery, VU University Medical Centre, Amsterdam, The Netherlands
| | | | - Gabor S A Abis
- Department of Surgery, Spaarne Gasthuis, Haarlem, The Netherlands
| | - Amish Acharya
- Department of Surgery, St Mary's Hospital, London, UK
| | - Marjolein Ankersmit
- Department of Surgery, VU University Medical Centre, Amsterdam, The Netherlands
| | - Stavros A Antoniou
- Department of Surgery, Center for Minimally Invasive Surgery, Neuwerk Hospital, Mönchengladbach, Germany
- Department of Surgery, University Hospital of Heraklion, Heraklion, Greece
| | - Simone Arolfo
- Department of Surgery, University of Torino, Torino, Italy
| | - Benjamin Babic
- Department of Surgery, Agaplesion Markus Krankenhaus, Frankfurt am Main, Germany
| | - Luigi Boni
- Department of Surgery, Minimally Invasive Surgery Research Center, University of Insubria, Varese, Italy
| | - Marlieke Bruntink
- Department of Surgery, Red Cross Hospital, Beverwijk, The Netherlands
| | | | - Barbara Defoort
- Department of Surgery, Maria Middelares Ghent, Ghent, Belgium
| | - Charlotte L Deijen
- Department of Surgery, VU University Medical Centre, Amsterdam, The Netherlands
| | - F Borja DeLacy
- Department of Surgery, Hospital Clinic of Barcelona, Barcelona, Spain
| | - Peter Mnyh Go
- Department of Surgery, St. Antonius Hospital, Nieuwegein, The Netherlands
| | | | | | - Florin Iordache
- Department of Surgery, University of Medicine and Pharmacy "Carol Davila", Bucharest, Romania
| | | | - Filip E Muysoms
- Department of Surgery, Maria Middelares Ghent, Ghent, Belgium
| | - M Mahir Ozmen
- Department of Surgery, School of Medicine, Bahcesehir University, Istanbul, Turkey
| | - Michail Papoulas
- Department of Surgery, Tel Aviv Sourasky Medical Centre, Tel Aviv, Israel
| | - Michael Rhodes
- Department of Surgery, Stepping Hill Hospital, Stockport, UK
| | - Jennifer Straatman
- Department of Surgery, VU University Medical Centre, Amsterdam, The Netherlands
| | - Mark Tenhagen
- Department of Surgery, Red Cross Hospital, Beverwijk, The Netherlands
| | - Victor Turrado
- Department of Surgery, Hospital de la Santa Creu i Sant Pau, Barcelona, Spain
| | - Andras Vereczkei
- Department of Surgery, Medical School University of Pécs, Pecs, Hungary
| | - Ramon Vilallonga
- Department of Surgery, University Hospital Vall Hebrón, Barcelona, Spain
| | - Jort D Deelder
- Department of Surgery, Noordwest Clinics Alkmaar, Alkmaar, The Netherlands
| | - Jaap Bonjer
- Department of Surgery, VU University Medical Centre, Amsterdam, The Netherlands
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20
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Abstract
Surgeons play a pivotal role in the decision-making and multidisciplinary management of childhood solid tumours.1 Evidence-based medicine-"aims to optimise decision making by emphasising on the use of best evidence from well-designed conducted research." This article offers a brief overview in an effort to demonstrate how a selection of well-conducted, recently published studies can help address some topical and controversial themes in paediatric surgical oncology practice.
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Affiliation(s)
- Paul D Losty
- Alder Hey Children׳s Hospital NHS Foundation Trust, Institute of Translational Medicine, University of Liverpool, Liverpool, UK.
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21
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Pape UF, Niederle B, Costa F, Gross D, Kelestimur F, Kianmanesh R, Knigge U, Öberg K, Pavel M, Perren A, Toumpanakis C, O'Connor J, Krenning E, Reed N, O'Toole D. ENETS Consensus Guidelines for Neuroendocrine Neoplasms of the Appendix (Excluding Goblet Cell Carcinomas). Neuroendocrinology 2016; 103:144-52. [PMID: 26730583 DOI: 10.1159/000443165] [Citation(s) in RCA: 154] [Impact Index Per Article: 19.3] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
- U-F Pape
- Department of Hepatology and Gastroenterology, Campus Virchow Klinikum, Charitx00E9; Universitx00E4;tsmedizin Berlin, Berlin, Germany
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22
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Musholt TJ, Watzka FM. Neuroendokrine Neoplasien des gastroenteropankreatischen Systems. GASTROENTEROLOGE 2015. [DOI: 10.1007/s11377-015-0003-2] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
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23
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Amr B, Froghi F, Edmond M, Haq K, Thengungal Kochupapy R. Management and outcomes of appendicular neuroendocrine tumours: Retrospective review with 5-year follow-up. EUROPEAN JOURNAL OF SURGICAL ONCOLOGY 2015; 41:1243-6. [PMID: 26188371 DOI: 10.1016/j.ejso.2015.06.010] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2015] [Revised: 06/11/2015] [Accepted: 06/19/2015] [Indexed: 11/16/2022]
Abstract
BACKGROUND Neuroendocrine (NEN) tumours are the commonest type of tumours affecting the appendix. The majority of cases are diagnosed incidentally on post-operative histopathological examination of the resected appendicectomy specimen. Preoperative diagnosis remains a challenge, unless the patient presents with obvious features of carcinoid syndrome or signs of metastatic disease. Hence, the authors present our five-year experience in diagnosing and managing NEN tumours of the appendix. METHODS Retrospective review of all patients underwent an emergency appendicectomy with intention to treat clinically suspected appendicitis at Derriford Hospital (Plymouth, Devon, UK) was undertaken. Patients with diagnoses other than NEN of the appendix were excluded. For patients with appendicular NEN, demographic data, pre-operative inflammatory markers, post-operative histology results as well as follow-up investigations were obtained using patients' electronic records. Case notes were reviewed for clinical presentation, operative details and follow-up information. RESULTS 2724 patients underwent emergency appendicectomy between January 2009 and May 2014. Carcinoid tumours were identified in 17 histologically examined appendicectomy specimens. Clinically, all patients presented with acute appendicitis with raised inflammatory markers in 58.5% of patients. Median tumour size was 5 (1-20) mm. Median postoperative follow up was 2.9 (0.92-5.8) years. All patients remained tumour free with no evidence of metastasis or recurrence during the entire study period. CONCLUSION Appendicular NEN are rare and usually diagnosed incidentally; hence precise examination of routine appendicectomy specimens is fundamental in the diagnosis. Simple appendicectomy is sufficient for tumours less than 1 cm for adequate clearance, whilst right hemi-colectomy is recommended for larger tumours.
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Affiliation(s)
- B Amr
- Surgical Department, Derriford Hospital, Plymouth Hospitals NHS Trust, United Kingdom
| | - F Froghi
- Surgical Department, Derriford Hospital, Plymouth Hospitals NHS Trust, United Kingdom.
| | - M Edmond
- Surgical Department, Derriford Hospital, Plymouth Hospitals NHS Trust, United Kingdom
| | - K Haq
- Surgical Department, Derriford Hospital, Plymouth Hospitals NHS Trust, United Kingdom
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24
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Fawkner-Corbett D, Jawaid WB, McPartland J, Losty PD. Interval appendectomy in children clinical outcomes, financial costs and patient benefits. Pediatr Surg Int 2014; 30:743-6. [PMID: 24874344 DOI: 10.1007/s00383-014-3521-y] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 05/22/2014] [Indexed: 11/28/2022]
Abstract
BACKGROUND Elective interval appendectomy (IA) is traditionally advocated for the management of appendiceal mass (AM) in children. Surgeons have debated the evidence and 'risks' vs. 'benefits' to support IA. There are currently no randomised controlled trials and guiding best practice and financial costings for IA are lacking. We herein report clinical outcomes, patient benefits and tariff charges linked with the provision of IA at a regional UK paediatric surgical centre. METHODS Hospital case records of patients with AM were identified using pathology records and hospital admission codes during a 15-year period (1997-2011). Tariff costs (£ Sterling) were calculated for all admissions during the era 2007-2011. RESULTS 69 children were admitted with AM (61% female, median age 10.5 years, range 2.1-16 years). Median initial hospital stay with resolution of symptoms was 8 days (range 3-14 days). 61 children (88%) had elective IA (median interval 76 days, range 29-230 days). Eight (12 %) patients required emergency readmission for early appendectomy (median interval 21 days, range 6-51 days). Hospital stay for emergency readmission appendectomy in these children was significantly longer than IA (median 6 vs. 3 days, p < 0.01). Laparoscopic appendectomy vs. 'open' appendectomy was associated with shorter length of stay in the IA cohort (median 3 vs. 2 days p < 0.01). No intra-operative morbidity was recorded in the study with only a single case developing a post-operative wound infection. Median cost for IA was £1,936. Costings were higher in the emergency appendectomy group-£2,171 vs. 1,936; p = 0.09, NS. CONCLUSION Only 12% of children at this centre develop recurrent appendicitis after primary admission with AM. Interval and emergency appendectomy were associated with low morbidity. Parents should be informed that IA may be 'non essential' surgery. Paediatric surgeons not routinely advocating IA can potentially save the NHS £1,936 per patient. Future randomised studies are warranted to confirm or refute these findings.
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Affiliation(s)
- David Fawkner-Corbett
- Department of Paediatric Surgery, Alder Hey Children's Hospital NHS Foundation Trust, University of Liverpool, Liverpool, UK
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