alexa Biology and treatment of metastatic gastrointestinal neuroendocrine tumors.


Archives of Surgical Oncology

Author(s): Strosberg JR, Nasir A, Hodul P, Kvols L

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Abstract Neuroendocrine malignancies of the gastroenteropancreatic axis include carcinoid and pancreatic endocrine tumors. These heterogeneous neoplasms arise from the enterochromaffin cells of the gastrointestinal tract and the islet cells of the pancreas. Histologically, most well-differentiated endocrine tumors consist of small, round, monomorphic cells, arranged in islands or trabeculae, with a distinct "salt-and-pepper" pattern of nuclear chromatin. Chromogranin and synaptophysin are useful as immunohistochemical markers of neuroendocrine differentiation. Other common features include the capacity to secrete peptide hormones and biogenic amines. A relatively indolent growth rate is characteristic of most gastrointestinal neuroendocrine tumors, with the exception of poorly differentiated tumors which are usually aggressive. Treatment strategies are designed to limit tumor progression and palliate hormonal syndromes. This article reviews the diverse biologic characteristics of gastrointestinal neuroendocrine tumors and current treatment options for metastatic disease.
This article was published in Gastrointest Cancer Res and referenced in Archives of Surgical Oncology

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