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Updated: Jun 7, 2026

Local Anesthetic Thoracoscopy for Undiagnosed Pleural Effusion
Published on: November 10, 2023
[Thoracic empyema due to subphrenic appendicitis: an infrequent presentation]
Andrés García Marín1, Jorge Martín Gil, Carmen Nofuentes Riera
1Servicio de Cirugía General II, Hospital General Universitario Gregorio Marañón, Madrid, España. agmarin80@hotmail.com
Subphrenic appendicitis, a rare cause of thoracic empyema, presents atypically. This case highlights the importance of considering unusual presentations of appendicitis to avoid delayed diagnosis and complications.
Area of Science:
- Thoracic Surgery
- Gastroenterology
- Infectious Disease
Background:
- Acute appendicitis is a common surgical emergency, but atypical presentations can complicate diagnosis.
- Subphrenic appendicitis, an inflammation of the appendix below the diaphragm, is rare and often presents with non-specific symptoms.
Observation:
- A patient presented with symptoms suggestive of a thoracic complication, rather than typical abdominal pain.
- Diagnostic imaging revealed a subphrenic abscess originating from appendicitis, leading to secondary thoracic empyema.
Findings:
- The case demonstrates a rare instance where appendicitis, specifically subphrenic appendicitis, led to the development of thoracic empyema.
- Delayed diagnosis due to atypical presentation resulted in significant thoracic complications.
Implications:
- This case underscores the need for a broad differential diagnosis in patients with unexplained thoracic symptoms, considering intra-abdominal sources.
- Early recognition and management of atypical appendicitis are crucial to prevent severe complications like empyema.
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