gastrins has been researched along with Retroperitoneal-Neoplasms* in 3 studies
3 other study(ies) available for gastrins and Retroperitoneal-Neoplasms
| Article | Year |
|---|---|
Retroperitoneal cystic neuroendocrine tumor. A case report.
A 21 cm retroperitoneal cystic mass was excised from a 71 year old woman. The cyst was filled with a hemorrhagic fluid and contained a 5 cm parietal hemorrhagic nodule. On histology, the nodule was composed of a uniform population of round cells arranged in trabeculae and nests. The neoplastic cells were immunoreactive to cytokeratin, EMA, NSE, chromogranin A, pancreatic polypeptide (PP) and Gastrin (G). Ultrastructural observation of neurosecretory granules confirmed the neuroendocrine nature of the tumor. No other lesions were detected and a diagnosis of primary epithelial neuroendocrine tumor was rendered. The histogenesis of the tumor including the possibility of a paraganglionic origin is discussed. Topics: Aged; Biomarkers, Tumor; Calcitonin; Carcinoma, Neuroendocrine; Diagnosis, Differential; Epithelium; Female; Gastrins; Humans; Keratins; Neoplasm Proteins; Pancreatic Polypeptide; Paraganglioma; Retroperitoneal Neoplasms; S100 Proteins; Teratoma | 1995 |
[Childhood retroperitoneal extra-adrenal paraganglioma, secretor of catecholamines, thyrocalcitonin and gastrin. An immunohistochemical and ultrastructural study].
Topics: Adolescent; Calcitonin; Catecholamines; Female; Gastrins; Humans; Male; Paraganglioma; Retroperitoneal Neoplasms | 1986 |
[Retroperitoneal and pancreatic mucinous tumors. Immunohistochemical study].
Examples of mucinous tumors from retroperitoneum (2) and pancreas (1) were studied. These tumors share many morphological similarities with ovarian mucinous tumour and adenoma malignum of uterine cervix. They have a similar spectrum of endocrine cells; serotonin, somatostatin, gastrin and pancreatic polypeptide cells were characterized. In nonproliferative areas was found a well-differentiated mucinous columnar epithelium with scarce endocrine cell. In more proliferative areas were found either a mucinous columnar lining with infolds and secondary glands or a less well-differentiated intestinal-type epithelium with papillary formations; both linings were well supplied in endocrine cells. Topics: Adenocarcinoma; Adult; Endocrine Glands; Epithelium; Female; Fluorescent Antibody Technique; Gastrins; Histocytochemistry; Humans; Ovarian Neoplasms; Pancreatic Neoplasms; Pancreatic Polypeptide; Retroperitoneal Neoplasms; Serotonin; Somatostatin; Uterine Cervical Neoplasms | 1985 |