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Appendiceal Mucinous Neoplasm: An Unexpected Diagnosis in Abdominal Pain

Inês Pereira Soares1, António Sampaio Mesquita1, Luís Ramos2

  • 1Paediatrics, Unidade Local de Saúde Estuário do Tejo - Hospital de Vila Franca de Xira, Lisbon, PRT.

Cureus
|April 10, 2025
PubMed

Insights

Appendiceal mucinous neoplasms, rare in children, can present with vague symptoms. This case highlights a challenging diagnosis and successful surgical management of this uncommon appendix tumor.

Area of Science:

  • Gastroenterology and Hepatology
  • Pediatric Surgery
  • Oncology

Background:

  • Appendiceal mucinous neoplasms (AMNs) are rare tumors characterized by mucin accumulation in the appendix.
  • While often benign, AMNs can lead to severe complications like pseudomyxoma peritonei.
  • Diagnosis and management, particularly in pediatric patients, present unique challenges.

Observation:

  • A 17-year-old male presented with fever and right lower quadrant pain.
  • Initial clinical, imaging, and intraoperative findings were non-specific.
  • Histopathological examination revealed an appendiceal mucinous neoplasm.

Findings:

  • The patient underwent complete appendiceal resection with clear margins.
  • No further adjuvant therapy or follow-up treatment was required.
  • This case underscores the diagnostic difficulties associated with AMNs in young patients.

Implications:

  • This case highlights an unusual diagnostic pathway for a rare pediatric neoplasm.
  • It emphasizes the need for continued research into optimal surgical and therapeutic strategies for AMNs.
  • Further investigation is warranted regarding long-term surveillance and advanced imaging techniques for pediatric AMN management.
Keywords:
abdominal painappendicitisappendixlow-grade appendiceal mucinous neoplasmsmucin

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