Primary Calcitonin-negative Neuroendocrine Tumor
نویسندگان
چکیده
منابع مشابه
Calcitonin-negative primary neuroendocrine tumor of the thyroid (nonmedullary) in a dog
The Calcitonin-negative neuroendocrine tumor of the thyroid (CNNET) or "nonmedullary" in humans is a rare tumor that arises primarily in the thyroid gland and may be mistaken for medullary thyroid carcinoma; it is characterized by the immunohistochemical (IHC) expression of neuroendocrine markers and the absence of expression for calcitonin. An Argentine dogo bitch showed a solid, compact thyro...
متن کاملModified binding of proteins from calcitonin-negative tumor cells to the neuroendocrine-specific CANNTG motif of the calcitonin gene.
Transcription of the calcitonin (CT) gene in the medullary thyroid carcinoma (MTC) cell line TT is modulated by a neuroendocrine-specific enhancer fragment (nucleotides -965 to -905) containing two CANNTG motifs (E2 and E3) and an ETs-like response element. To determine the cell-specific component of this fragment, oligonucleotides containing the individual elements were inserted in front of a ...
متن کاملA Calcitonin-Negative Neuroendocrine Tumor Derived from Follicular Lesions of the Thyroid
Neuroendocrine lesions of the thyroid are rare. The most common types are medullary thyroid carcinomas (MTCs) and C-cell hyperplasia. MTCs originate from thyroid parafollicular cells that secrete calcitonin which serves as a serum marker of MTCs. Here, the rare case of a calcitonin-negative neuroendocrine tumor (NET) derived from follicular lesions of the thyroid is described. A 34-year-old man...
متن کاملPrimary Neuroendocrine Tumor in Brain
The incidence of brain metastases for neuroendocrine tumor (NET) is reportedly 1.5~5%, and the origin is usually pulmonary. A 77-year-old man presented to our hospital with headache and disturbance of specific skilled motor activities. Computed tomography (CT) showed a massive neoplastic lesion originating in the left temporal and parietal lobes that caused a mass edematous effect. Grossly, tot...
متن کاملF-18 FDG PET/CT imaging of primary hepatic neuroendocrine tumor
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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ژورنال
عنوان ژورنال: World Journal of Endocrine Surgery
سال: 2017
ISSN: 0975-5039,0975-7902
DOI: 10.5005/jp-journals-10002-1221