Appendiceal abscess mimicking a painless abdominal wall mass in an adolescent: a case report - Report - MDSpire

Appendiceal abscess mimicking a painless abdominal wall mass in an adolescent: a case report

  • By

  • Guanghua Zhang

  • Ming Sun

  • Peng Huang

  • Hongqiang Bian

  • Jun Yang

  • June 25, 2026

  • 0 min

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Clinical Report: Appendiceal Abscess Presenting as Abdominal Wall Mass

Overview

This case study discusses a 13-year-old boy who presented with an abdominal wall mass without abdominal pain, ultimately diagnosed with an appendiceal abscess.

Background

Acute appendicitis is the most common surgical emergency in children, yet atypical presentations can lead to significant diagnostic errors. The occurrence of an appendiceal abscess manifesting solely as an abdominal wall mass, particularly in the absence of abdominal pain, poses challenges for clinicians.

Data Highlights

No numerical data or trial data presented in the article.

Key Findings

  • A previously healthy 13-year-old boy presented with a right lower abdominal wall mass and denied abdominal pain.
  • Initial misdiagnosis as a soft tissue infection occurred despite marked systemic inflammation.
  • Non-contrast CT revealed an abdominal wall abscess connected to a large periappendiceal abscess.
  • Staged management with intravenous antibiotics followed by laparoscopic appendectomy was effective.
  • Comprehensive ultrasound is essential to avoid overlooking intra-abdominal pathology in similar cases.

Clinical Implications

Clinicians should maintain a broad differential diagnosis when evaluating abdominal wall masses in children, even in the absence of abdominal pain.

Conclusion

A structured diagnostic approach can enhance clinical vigilance in similar scenarios.

Related Resources & Content

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  2. Duodenal ulcer perforation presenting as acute appendicitis in a child: a case report and literature review
  3. Delayed appendectomy as a viable and safe treatment option following conservative management of appendicitis with abscess: a retrospective cohort analysis from a single center
  4. The risk of neoplasms in appendiceal abscess: what emergency surgeons should know
  5. Diagnosis and Treatment of Acute Appendicitis: 2025 Edition of the World Society of Emergency Surgery Jerusalem Guidelines
  6. Diagnosis and Treatment of Acute Appendicitis: 2025 Edition of the World Society of Emergency Surgery Jerusalem Guidelines
  7. Appendectomy Versus Antibiotics for Acute Uncomplicated Appendicitis in Children: An International, Multicenter, Open-Label, Non-Inferiority, Randomized Trial - UCL Discovery

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