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Appendiceal mucocele is a rare entity first described by Carl von Rokitansky, characterized by cystic dilatation of the appendiceal lumen due to obstruction, epithelial proliferation or inflammation and accumulation of mucoid material. The cause can be either neoplastic or non-neoplastic. Patients with appendiceal mucocele can be asymptomatic or present with right lower quadrant pain which may mimic acute appendicitis.

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Article Synopsis
  • * Diagnosis mainly relies on CECT, but misdiagnoses can occur, indicating that other diagnostic methods should be considered more frequently.
  • * Treatment typically involves appendectomy, but there's debate over whether additional surgical procedures like cecectomy or right hemicolectomy are necessary, illustrated by a case of a 72-year-old woman who presented with unusual symptoms and an unexpected intraoperative finding.
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CA 19-9 (carbohydrate antigen 19-9) is a tumor marker widely used for the follow-up of patients with pancreatic cancer and other digestive neoplasia. This case report describes a discrepancy between the results of serum CA 19-9 analyses using the Alinity analytical platform (Abbott™) and two other techniques, Kryptor Gold (ThermoFisher Scientific™) and Cobas E411 (Roche™), in the context of a young woman with appendiceal mucocele. In this context, when the serum concentration of CA 19-9 is high, it may raise concerns about potential malignancy or rupture of the mucocele that may lead to tumoral dissemination in the abdominal cavity.

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Mucinous appendicular neoplasms are a rare and heterogeneous group of tumors, whose treatment may vary based on histologic features and extent. We present a case of low-grade appendiceal mucinous neoplasm mimicking an acute appendicitis scenario. The patient underwent appendectomy along with resection of the caecal fundus.

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Amyand's hernia (AH) is a rare type of inguinal hernia, containing the appendix in the hernia sac irrespective of the presence of appendicitis. Appendiceal mucocele represents a dilation of the appendix with an accumulation of mucinous material and could be either a benign or a malignant process. Herein we report an exceptionally rare case of a perforated appendiceal mucocele within an AH.

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