Gastro-intestinal stromal tumors (GISTs) of the appendix are a rare entity. To date, only eight cases has been described in the literature, most of which have been of the benign type. We report a new case of an appendiceal GIST in a 75-year-old man. The tumor was discovered when the patient presented with acute appendiceacal peritonitis. Preoperative diagnosis of appendiceal GIST was rarely done as tumors were usually associated with appendicitis-like symptoms.

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http://www.ncbi.nlm.nih.gov/pmc/articles/PMC3810228PMC
http://dx.doi.org/10.11604/pamj.2013.15.85.2430DOI Listing

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Article Synopsis
  • * A 68-year-old man with NF1 had multiple small intestinal GISTs causing anemia and underwent surgery to remove them; two years later, he developed an enlarging mass in the appendix that was surgically removed due to concerns about its potential malignancy.
  • * Post-surgery, the diagnosis of an appendiceal neurofibroma was confirmed, highlighting the challenge in identifying these lesions preoperatively and stressing the importance of surgical
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Gastrointestinal Stromal Tumour of the Appendix: A Very Rare Entity.

Cureus

May 2024

Department of General Surgery, Dumfries and Galloway Royal Infirmary, Dumfries, GBR.

A 74-year-old man who presented with upper abdominal pain was found to have an incidental appendiceal mass on cross-sectional imaging. He underwent a laparoscopic appendicectomy with histopathological examination confirming a completely resected appendiceal gastrointestinal stromal tumour (GIST). Appendiceal GISTs are rare.

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Aims: Appendiceal mucinous neoplasms feature neoplastic mucinous epithelium with pushing borders and densely fibrotic walls. We have identified five examples of analogous colorectal tumours.

Methods And Results: Slides, pathology reports, and clinical data were reviewed.

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Imaging of pediatric gastrointestinal tumors: A tertiary center experience over 19 years.

Eur J Radiol

June 2024

Department of Diagnostic Imaging, Hospital for Sick Children, 555 University Ave, Toronto, M5G 1X8, Canada; Department of Medical Imaging, University of Toronto, Canada. Electronic address:

Purpose: Gastrointestinal tract (GIT) tumors in children are rare and there is a scarcity of data on their imaging features. The purpose of this study was to determine thefrequency of various GIT tumor types in children and to identify key imaging characteristics.

Methods: This retrospective, single-center study was approved by the local ethics committee.

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The present study aimed to assess the characteristics and outcomes of appendiceal malignant mesenchymal tumors. This was a retrospective case-series study of patients with appendiceal malignant mesenchymal tumors in the national cancer database (2005-2019). The main outcomes were overall survival (OS) and short-term mortality.

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