Appendix cancer laboratory findings

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Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1]; Associate Editor(s)-in-Chief: Soroush Seifirad, M.D.[2]


There are no diagnostic laboratory findings associated with appendix cancer in general. Laboratory findings consistent with the diagnosis of carcinoid tumors include , Chromogranin A (CgA), 5-HIAA (5-hydroxyindoleacetic acid) as well as Ki67. Some patients with colonic type adenocarcinoma may have elevated concentration of CEA and CA 19-9.

Laboratory Findings


  1. Carmignani CP, Hampton R, Sugarbaker CE, Chang D, Sugarbaker PH (2004) Utility of CEA and CA 19-9 tumor markers in diagnosis and prognostic assessment of mucinous epithelial cancers of the appendix. J Surg Oncol 87 (4):162-6. DOI:10.1002/jso.20107 PMID: 15334630
  2. Oberg K, Janson ET, Eriksson B (1999) Tumour markers in neuroendocrine tumours. Ital J Gastroenterol Hepatol 31 Suppl 2 ():S160-2. PMID: 10604122
  3. Gut P, Czarnywojtek A, Fischbach J, Bączyk M, Ziemnicka K, Wrotkowska E et al. (2016) Chromogranin A - unspecific neuroendocrine marker. Clinical utility and potential diagnostic pitfalls. Arch Med Sci 12 (1):1-9. DOI:10.5114/aoms.2016.57577 PMID: 26925113
  4. 4.0 4.1 Maroun J, Kocha W, Kvols L, Bjarnason G, Chen E, Germond C et al. (2006) Guidelines for the diagnosis and management of carcinoid tumours. Part 1: the gastrointestinal tract. A statement from a Canadian National Carcinoid Expert Group. Curr Oncol 13 (2):67-76. PMID: 17576444
  5. Eriksson B, Oberg K, Stridsberg M (2000) Tumor markers in neuroendocrine tumors. Digestion 62 Suppl 1 ():33-8. DOI:10.1159/000051853 PMID: 10940685
  6. Oberg K (2003) Diagnosis and treatment of carcinoid tumors. Expert Rev Anticancer Ther 3 (6):863-77. DOI:10.1586/14737140.3.6.863 PMID: 14686708

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