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Vertical fissure: computed tomographic observation and correlation with chest radiography
Yasuyuki Kurihara1, Shin Matsuoka, Kunihiro Yagihashi
1Department of Radiology, St. Marianna University School of Medicine, 2-16-1 Sugao, Miyamae-ku, Kawasaki 216-8511, Japan. y4kuri@marianna-u.ac.jp
The vertical fissure, often seen on chest radiographs, is linked to lower lobe volume loss. It may represent a major fissure
Area of Science:
- Radiology
- Thoracic Imaging
- Anatomy
Background:
- Vertical fissures are anatomical landmarks in the lungs.
- Understanding their radiographic appearance is crucial for diagnosis.
Purpose of the Study:
- To evaluate radiographic and computed tomography (CT) findings of vertical fissures.
- To correlate imaging findings with potential underlying lung conditions.
Main Methods:
- Chest radiographs were analyzed for vertical fissure characteristics (linear shadow vs. linear edge with opacity/lucency).
- CT scans assessed for lower lobe volume loss and fissure orientation relative to the X-ray beam.
Main Results:
- Vertical fissures were identified in six patients.
- All patients showed lower lobe volume loss on CT.
- Tangential fissure orientation on CT was noted in only two patients without specific radiographic opacity/lucency.
Conclusions:
- Vertical fissures are strongly associated with lower lobe volume loss.
- They may represent the edge of the anterobasal segment or a tangential fissure portion.
- Radiographic opacity/lucency is not consistently present.
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