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The World Health Organization (WHO) classification scheme places neuroendocrine tumors into three main categories, which emphasize the tumor grade rather than the anatomical origin: [4] [5] well-differentiated neuroendocrine tumors, further subdivided into tumors with benign and those with uncertain behavior
Due to presence of these tumors, DIPNECH is classified as a pre-malignant condition. [1] Although there have been reports of atypical carcinoids with local lymph node involvement, there are no reports of more aggressive neuroendocrine tumors, such as large cell neuroendocrine or small cell lung cancer, associated with DIPNECH. [3]
The new 2019 WHO classification and grading criteria for neuroendocrine tumors of the digestive system grades all the neuroendocrine tumors into three grades, based on their degree of cellular differentiation (from well-differentiated NET grade (G)1 to G3, and poorly-differentiated neuroendokrina cancer, NEC G3), morphology, mitotic rate and Ki ...
Neuroendocrine carcinoma of the cervix is best defined separately:Neuroendocrine: Of, relating to, or involving the interaction between the nervous system and the hormones of the endocrine glands. Carcinoma: An invasive malignant tumor derived from epithelial tissue that tends to metastasize to other areas of the body.
Large-cell neuroendocrine carcinoma of the lung (LCNEC of the lung), or pulmonary large-cell neuroendocrine carcinoma (PLCNC), is a highly malignant neoplasm arising from transformed epithelial cells originating in tissues within the pulmonary tree. It is currently considered to be a subtype of large-cell lung carcinoma.
The Neuroendocrine Tumor Research Foundation (NETRF), previously known as the Caring for Carcinoid Foundation (CFCF), is a nonprofit corporation organized under the laws of Massachusetts in order to support neuroendocrine and carcinoid cancer research in the public interest. The mission of NETRF is to fund research to discover cures and more ...
Endocrine oncology refers to a medical speciality dealing with hormone producing tumors, i.e. a combination of endocrinology and oncology. Few centres are specializing in hormone producing tumors only, due to the relatively low incidence. Most centres have gastroenterologists, oncologist or endocrinologists who deal with other diseases as well.
Tumor xenografts of mice subjected to castration have been shown to undergo rapid regression with a dramatic drop in androgen receptor expression in tumor cells and a steep increase in the proportion of apoptotic cells [5] Following castration, the proportion, as well as the density of neuroendocrine tumor cells, rises abruptly, eventually ...