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Bulging (sagging) fissure sign in Hemophilus influenzae lobar pneumonia
Southern Medical Journal
|November 1, 1978
Abstract:
A bulging fissure sign was noticed on chest roentgenogram in a patient with H influenzae pneumonia. This sign is usually associated with Klebsiella pneumonia and has also been seen in pneumococcal and plague pneumonia, tuberculosis, mass lesions of the lung, and large lung abscesses. This is thought to be the first report of a bulging fissure sign associated with pneumonia due to H influenzae.
Insights
A bulging fissure sign on chest X-ray is typically linked to Klebsiella pneumonia. This case report highlights its occurrence in Haemophilus influenzae pneumonia, expanding the known associations for this radiographic finding.
Area of Science:
- Radiology
- Infectious Diseases
- Pulmonology
Background:
- The bulging fissure sign is a recognized radiographic finding on chest roentgenograms.
- It is classically associated with Klebsiella pneumoniae infections.
- Other reported causes include pneumococcal pneumonia, plague pneumonia, tuberculosis, lung mass lesions, and lung abscesses.
Observation:
- A bulging fissure sign was observed on a chest roentgenogram.
- The patient presented with pneumonia caused by Haemophilus influenzae.
Findings:
- This represents a novel association between the bulging fissure sign and Haemophilus influenzae pneumonia.
- The radiographic finding is not exclusive to Gram-negative bacterial pneumonias.
Implications:
- This finding expands the differential diagnosis for the bulging fissure sign.
- Clinicians should consider Haemophilus influenzae in the differential diagnosis of pneumonia presenting with a bulging fissure sign.
- Further research may elucidate the specific pathoradiological mechanisms involved.