Results 131 to 140 of about 132,293 (166)

Chromogranin A and neuroendocrine tumors

Endocrinología y Nutrición (English Edition), 2013
Chromogranin A (CgA) is the most abundant granin in gastroenteropancreatic neuroendocrine tumors (GEP-NETs). As a tumor marker is moderately sensitive and nonspecific. Despite the limitations of testing methods, which require careful interpretation, especially in the case of gastrinomas, patients treated with somatostatin analogues, and poorly ...
José Ángel, Díaz Pérez, Maria, Currás Freixes   +1 more
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Neuroendocrine Tumors of the Pancreas

Current Treatment Options in Gastroenterology, 2004
Neuroendocrine tumors (NETs) are rare tumors of the endocrine pancreas that require a high degree of suspicion for timely diagnosis. Diagnosis is often delayed due to the nonspecific and intermittent presentation of symptoms. As many as 45% to 55% of tumors are nonfunctional and are typically diagnosed secondary to mass effect related symptoms or found
James M., McLoughlin, Joseph A., Kuhn, Jeffrey T., Lamont   +2 more
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Gastroenteropancreatic Neuroendocrine Tumors

Gastroenterology
Neuroendocrine tumors (NETs) represent a heterogeneous group of neoplasms with diverse biological and clinical behavior, and gastroenteropancreatic neuroendocrine tumors (GEP-NETs) are the most common subtype. This review provides an overview of GEP-NETs, with a focus on incidence trends, pathologic classification, diagnostic strategies, therapeutic ...
Namrata, Vijayvergia, Linda S, Lee, Bryson W, Katona   +2 more
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Imaging of Neuroendocrine Tumors

Radiologic Clinics of North America, 2011
Neuroendocrine tumors (NETs) constitute a large group of diverse neoplasms with a wide spectrum of clinical, imaging, and pathologic findings. Imaging diagnosis of NETs can be challenging, and several complementary imaging modalities may be needed during the diagnostic workup.
Matthew T, Heller, Amar B, Shah
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Neuroendocrine tumors of the larynx

Head & Neck, 1991
AbstractA review of the international literature has revealed 68 paragangliomas, 42 large cell, and 74 small cell tumors of the larynx. Paragangliomas are usually benign, although malignant cases have been reported. Large cell tumors are malignancies associated with a high incidence of early cervical metastasis. Small cell tumors are aggressive cancers
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Duodenal neuroendocrine tumors

Khirurgiya. Zhurnal im. N.I. Pirogova, 2019
Significant augmentation of the incidence of duodenal neuroendocrine tumors duodenum has been observed in recent decades. There are 5 histological types of these tumors: gastrinoma (50-60%), somatostatin-producing tumor (15%), inactive serotonin-containing tumors (20%), poorly differentiated neuroendocrine carcinoma (
A V, Alekberzade, N N, Krylov, T N, Garmanova, R, Shahbazov, F, Azari, K S, Zuykova, E D, Litovchenko   +6 more
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Pancreatic neuroendocrine tumors

Disease-a-Month, 2013
Pancreatic neuroendocrine tumors (PNETs) have an incidence of approximately 1 per 100,000 individuals per year, and account for 1–2% of all pancreatic tumors. The annual incidence in the United States is about 3.65 per 100,000 population. Although they may manifest at any age, they most often occur in the fourth to sixth decades of life. Most PNETs are
Thiruvengadam, Muniraj, Sabitha, Vignesh, Shilpa, Shetty, Sudha, Thiruvengadam, Harry R, Aslanian   +4 more
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Neuroendocrine tumors of the pancreas

Current Opinion in Oncology, 2012
Pancreatic neuroendocrine tumors (PNETs) are rare tumors, with an incidence of one per 100, 000 individuals per year, and they account for 1-2% of all pancreatic neoplasms. PNETs are a heterogeneous group with varying clinical presentation, tumor biology and prognosis. This article reviews the current diagnostic strategy and treatment armamentarium for
Stacey A, Milan, Charles J, Yeo
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Neuroendocrine tumors of the appendix

Seminars in Diagnostic Pathology, 2004
The vast majority of neuroendocrine neoplasms of the appendix are carcinoid tumors. Most are of enterochromaffin (EC) cell type, although rare examples are of L cell type. EC cell carcinoids of the appendix differ from those encountered elsewhere in the gastrointestinal system.
Norman J, Carr, Leslie H, Sobin
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Epidemiology of Neuroendocrine Tumors

2015
Formerly named carcinoids, neuroendocrine tumors originate from diffuse endocrine cells, can involve any part of the gastrointestinal tract, endocrine pancreas and bronchopulmonary (BP) tree, and have a wide range of malignant potential. This chapter summarizes the data available on the epidemiology of neuroendocrine neoplasia (NEN) from around the ...
Fraenkel, Merav, Faggiano, Antongiulio, Valk, Gerlof D   +2 more
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