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Undetermined Ruptured Low-Grade Appendiceal Mucinous Neoplasm Following High-Energy Blunt Abdominal Trauma Requiring Emergency Laparotomy.
Clin Case Rep
January 2025
Department of Emergency, Critical Care, and Disaster Medicine, Faculty of Medicine, Dentistry, and Pharmaceutical Sciences Okayama University Okayama Japan.
Blunt abdominal trauma causing intraperitoneal injury and/or bleeding can be life-threatening, requiring immediate intervention. Diagnosing these cases can be challenging, especially when pre-existing conditions are involved. Low-grade appendiceal mucinous neoplasm (LAMN) is a rare tumor of the appendix that can lead to pseudomyxoma peritonei.
View Article and Find Full Text PDFCollision tumor of the appendix with concomitant cecal adenocarcinoma: A case report and literature review.
Int J Surg Case Rep
December 2024
Department of Surgery, Prince Mohammed Bin Abdulaziz Hospital, Riyadh, Saudi Arabia.
Introduction: Collision tumors of the appendix are rare tumors consisting of two distinct pathologies arising from different cell lines simultaneously. The most common type is the coexistence of a neuroendocrine tumor (NET) with a low-grade appendiceal mucinous neoplasm (LAMN). We report a unique case of appendiceal collision tumor with synchronous cecal intra-mucosal carcinoma and pulmonary sarcoidosis.
View Article and Find Full Text PDFAppendiceal collision tumors: case reports, management and literature review.
Front Surg
June 2023
Department of Surgery, Hepato-Biliary Surgery Unit, Santa Chiara Hospital, Trento, Italy.
Appendiceal tumors are incidentally detected in 0.5% cases of appendectomy for acute appendicitis and occur in approximately 1% of all appendectomies. Here, we report two cases of appendiceal collision tumors in two asymptomatic women.
View Article and Find Full Text PDFCollision Tumor of the Appendix.
Cureus
May 2023
General Surgery, Universidad Internacional del Ecuador/Axxis Hospital, Quito, ECU.
This report discusses the case of a 20-year-old female patient who presented with acute abdominal pain, nausea, and vomiting. Initial laboratory analyses suggested an inflammatory process, but imaging studies failed to reveal pathologies. The patient underwent a diagnostic laparoscopy, which showed a thickened and multicystic appendix with signs of acute inflammation.
View Article and Find Full Text PDFPseudomyxoma peritonei and an incidental low-grade appendiceal mucinous neoplasm and neuroendocrine appendiceal collision tumour: a case report.
J Surg Case Rep
May 2023
Leeds Institute of Emergency General Surgery, St James's University Hospital, Beckett Street, Leeds LS9 7TF, UK.
Appendiceal collision tumours are extremely rare, with most reported cases describing tumours consisting of a mucinous component and a neuroendocrine component. Low-grade appendiceal mucinous neoplasms, in some cases, have a tendency to rupture and disseminate their mucin-producing cells throughout the abdominal cavity, leading to a clinical syndrome known as pseudomyxoma peritonei (PMP). We present the case of a 64-year-old male who initially presented with acute appendicitis and was subsequently found to have PMP and appendiceal malignancy.
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