An atypical type I gastric neuroendocrine tumor (original) (raw)
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Unusual Presentation of a Neuroendocrine Tumor of Stomach as an Ulcer
Journal of case reports, 2021
Background: Gastric neuroendocrine tumors (G-NETs) originate from the enterochromaffin like (ECL) cells of the gastric mucosa and form less than 1% of all gastric tumors. These present as single to multiple polyps on endoscopy. Case Report: A 52-year-old female patient found to have an ulcer on esophagogastroduodenoscopy (EGD) which was reported as chronic gastritis on biopsy. She underwent distal gastrectomy with Billroth II anastomosis due to suspicion of malignancy only to be diagnosed as a grade II gastric neuroendocrine tumor on final histopathological examination. Conclusion: Majority of G-NETs are detected incidentally on endoscopy or present with gastrointestinal bleeding, anemia, fatigue, epigastric pain and vomiting. One should be mindful of this unusual presentation of a G-NET as a gastric ulcer and further evaluation should be considered if there is suspicion of malignancy even after endoscopic biopsy.
Gastric neuroendocrine tumors Chapter 1 Overview on Gastric Cancer
2017
Gastric Neuroendocrine Tumors (NET)s are classified on the basis of criteria that are common to all gastrointestinal and pancreatic neuroendocrine neoplasms. Most neuroendocrine neoplasms of the stomach are NETs –well differentiated, nonfunctioning enterochromaffin–like(ECL) cell carcinoids (ECL cell NETs)-arise predominantly in the corpus-fundus region [1]. Three distinct types are recognized :
Type 1 Gastric Neuroendocrine Tumor Found on Endoscopic Polypectomy
Gastric neuroendocrine tumors (GNET) are rare gastric neoplasms accounting for <1% of all gastric neoplasms. The World Health Organization (WHO) categorized these neoplasms as types 1-3 to help predict malignant potential and long-term survival and guide management. Improved outcomes have been shown with endoscopic resections, but further studies are needed to confirm the best approach. We present a case of a 56-year-old woman who demonstrated the classic features of type one GNET with mucosal and submucosal involvement in the setting of primary atrophic gastritis, secondary hypergastrinemia, and underlying pernicious anemia. In general, standardizing treatment has been difficult due to a variable presentation.
A Clinical Perspective on Gastric Neuroendocrine Neoplasia
Current Gastroenterology Reports, 2010
The incidence of gastric neuroendocrine tumors (NETs) has increased exponentially based on widespread use of endoscopy and a greater pathological awareness of the condition. A key concern is the potential association with hypergastrinemia induced by proton pump inhibitor administration. Previous confusion regarding diagnosis and therapy has been diminished by a series of international consensus statements defining the biology and management strategies for the disease. Overall, gastric NETs are categorized as welldifferentiated or poorly differentiated neoplasms. Welldifferentiated gastric NETs are enterochromaffin-like (ECL) cell tumors subclassified into three types based on their relationship to gastrin, a key regulator of ECL cell neoplastic transformation. The treatment of type 1 and type 2 tumors depends on the size and invasiveness of the tumor, whereas type 3 tumors and poorly differentiated neuroendocrine carcinomas warrant aggressive surgical resection. The disease-specific 5-year survival ranges from about 95% in type 1 gastric carcinoids to about 25% in poorly differentiated gastric NECs. Elucidation of the precise biology of a gastric NET is critical to diagnosis and delineation of a typespecific management strategy.
Type III gastric neuroendocrine tumor - a case report
Medicina Moderna - Modern Medicine, 2020
We present the case of a 71 year old female that was endoscopically diagnosed with type III neuroendocrine gastric tumor (NET). NETs are rare, slowly growing neoplasm originating in the neuroendocrine cells, that can occur anywhere in the body. Gastrointestinal forms account for more than a half of them. If type I and II gastric neuroendocrine tumors can be managed endoscopically, type III and IV have sugery as their main therapy. Because type III lessions have the greatest potential to generate metastasis, we did a CT scan on the patient and found distant metastasis located in the liver and also to the lymph nodes. Treatment options depend on the type of tumor, its location, signs and symptoms experienced by the patient, due to excess hormones produced by the tumor, and also if there is resectable metastatic disease or not. Altough our patient had a voluminous tumor, surgical resection was possible, followed by chemotherapy, with good evolution.
Journal of Medical Case Reports, 2013
Introduction: Zollinger-Ellison syndrome is characterized by recurrent peptic ulcers and diarrhea that result from gastrin-secreting neuroendocrine tumors of the gastrointestinal tract; nevertheless, severe hypergastrinemia may also have alternative pathogenetic explanations. Case presentation: A 61-year-old woman of Caucasian origin presented with a history of epigastric pain and early satiety, severe hypergastrinemia (approximately 2000 pg/mL) and a neuroendocrine polyp in the corpus of her stomach. Chronic atrophic gastritis and intestinal metaplasia was present, but she denied use of acid suppressant drugs and the results of tests for Helicobacter pylori as well as gastric parietal cell and intrinsic factor antibodies were negative. She underwent a radical gastric tangential resection. Six months later, serum gastrin was still elevated despite lack of recurrence of tumor. Conclusion: The clinical picture was suggestive for a hypochlorhydria-related hypergastrinemia with subsequent development of a non-secreting carcinoid. We suggest a periodic endoscopic follow-up in patients with severe hypochlorhydria-related hypergastrinemia in order to earlier detect neuroendocrine polyps.
GE - Portuguese Journal of Gastroenterology, 2021
Neuroendocrine tumors (NETs) are rare tumors derived from the neuroendocrine cell system, and more commonly found in the gastrointestinal (GI) tract. Over the last decades, the incidence of GI-NETs has been steadily increasing, partly due to the expanding indications for endoscopy. Most patients with NETs are asymptomatic, and their NETs are noticed during screening examinations; thus, endoscopists are on the frontline of the diagnosis of GI-NETs. Since GI-NETs are less frequent than other malignancies, the natural history, diagnosis, and management of these tumors may not be fully understood. In this review, we aim to update the endoscopist on key clinical features and management of patients with gastric, duodenal, and rectal NETs.
25 Years of Neuroendocrine Neoplasms of the Gastrointestinal Tract
This paper provides a personal pathologist's view of how neuroendocrine tumors (NET) were perceived and defined in the last quarter of a century. In years when the Helicobacter pylori, omeprazole and the adenoma–carcinoma sequence in colon carcinogenesis significantly impacted on gastrointestinal (GI) pathology daily practice, neuroendocrine neoplasms of the GI tract passed from the original carcinoid definition to the current NET and neuroendocrine carcinoma (NEC) definitions. The development of different concepts, basic tumor biology knowledge, tools for pathology diagnosis and the various World Health Organization (WHO) classifications from 1980 through 2010 are briefly reviewed and discussed.
Gastric neuroendocrine neoplasias: manifestations and comparative outcomes
Endocrine-Related Cancer
Although gastric neuroendocrine neoplasias (gNEN) are an orphan disease, their incidence is rising. The heterogeneous clinical course powers the ongoing discussion of the most appropriate classification system and management. Prognostic relevance of proposed classifications was retrospectively analyzed in 142 patients from a single tertiary referral centre. Baseline, management and survival data were acquired for statistical analyses. The distribution according to the clinicopathological typification were: gNEN-1 (n=86/60.6%), gNEN-2 (n=7/4.9%) gNEN-3 (n= 24/16.9%) and gNEN-4 (n=25/17.6%); while hypergastrinemia-associated gNEN-1 and -2 were all low grade tumours (NET-G1/2), formerly termed sporadic gNEN-3 could be subdivided into gNEN-3 with grade 1 or 2 and gNEN-4 with grade 3 (NEC-G3). During follow-up 36 patients died (25%). The mean overall survival (OS) of all gNEN was 14.2 years. The OS differed statistically significant across all subgroups with either classification system....