نتایج جستجو برای: neuroendocrine tumor
تعداد نتایج: 443250 فیلتر نتایج به سال:
pancreatic neuroendocrine tumors (pnet) are uncommon pancreatic neoplasms, accounting for 1-2% of all pancreatic tumors. however, they have a better prognosis and long-term survival compared to exocrine pancreatic cancer. pnets can be divided into functional or non-functional based upon whether or not they excrete active substances relevant to specific clinical syndromes. skeletal muscle metast...
Neuroendocrine carcinoma (NEC) of stomach is a rare and highly malignant tumor. It rarely occurs in the gastrointestinal (GI) tract especially in stomach. In this report, an 81-year-old male is presented with chief complaint of epigastric pain and early satiety. Endoscopic examination of the upper GI tract revealed an ulcerative mass measuring 3x4x4 cm in body of stomach, and a biopsy was taken...
Mixed neuroendocrine-non-neuroendocrine neoplasm (MiNEN) is defined as a tumor composed of cells originating from neuroendocrine in the embryonic intestine and elements epithelial adenocarcinoma. To determine differentiation grade MiNEN, proliferation index was used, for which at least 500 were examined. MiNEN rare that most frequently found lower gastrointestinal tract. We present clinical case ...
Dispersed neuroendocrine system (D.N.S) consists of a wide variety of cells that are present in the central and peripheral nervous system and in many classic endocrine organs and different tissues such as respiratory and gastrointestinal tracts, skin, prostate, breast and also their neoplasm show neuroendocrine differentiation by electron microscopy, immunohistochemistry or biochemical techniqu...
Neuroendocrine tumor (NET) is the most common tumors of appendix which usually found incidentally. Synchronous neuroendocrine and colonic carcinoma has been reported in previous case reports. The actual incidence these synchronous need to be determined by reviewing reports include appendectomy as part oncological colorectal operations.
Background & Aims: Mediastinal masses can occur at any age, but prevalence of them differs according to age. Studies show that the prevalence of malignant masses has increased recently. The aim of this study was evaluation of frequency of mediastinal masses according to the location, pathologic findings, and ages of them.Materials & Methods: This retrospective and descriptive study was done wi...
Introduction: Typical laryngeal carcinoid tumor, only 14 cases of which have been reported so far, is one of the rarest neuroendocrine tumors of the larynx. In all these cases supraglottic area was involved. Wide local excision is the treatment of choice. Case Report: This article represents a 68-year-old man who presented with progressive hoarseness since 6 months ago. Indirect laryngoscop...
Parathyroid hormone-related protein producing pancreatic neuroendocrine tumors have been infrequently reported. Herein, we report a case of an Iranian woman who had such a tumor during pregnancy, and gave birth to a female neonate with esophago-tracheal fistula and imperforated anus. Hypercalcemia was diagnosed at postpartum because of elevated serum calcium levels in the neonate and neurologic...
parathyroid hormone-related protein producing pancreatic neuroendocrine tumors have been infrequently reported. herein, we report a case of an iranian woman who had such a tumor during pregnancy, and gave birth to a female neonate with esophago-tracheal fistula and imperforated anus. hypercalcemia was diagnosed at postpartum because of elevated serum calcium levels in the neonate and neurologic...
Primary hepatic neuroendocrine tumors (PHNETs) are extremely rare neoplasms. Herein, we report a case of a 70-year-old man with a hepatic mass. The non-contrast computed tomography (CT) image showed a low-density mass, and dynamic CT images indicated the enhancement of the mass in the arterial phase and early washout in the late phase. F18- fluorodeoxyglucose (18F-FDG) positron emission tomogra...
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