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Related Experiment Videos

Peripheral upper lobe collapse in adults.

C Don1, R Desmarais

  • 1Department of Radiology, Ottawa General Hospital, University of Ottawa, Ontario, Canada.

Radiology
|March 1, 1989
PubMed
Summary
This summary is machine-generated.

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Atypical upper lobe collapse can mimic pleural disease. This condition, where the collapsed lobe adheres to the chest wall, was observed in two adult cases with lung cancer.

Area of Science:

  • Pulmonology
  • Thoracic Imaging
  • Oncologic Imaging

Background:

  • Atypical (peripheral) upper lobe collapse is a rare condition that can mimic loculated apical pleural effusion or other localized pleural diseases.
  • This occurs when the collapsed lobe maintains adherence to the lateral chest wall, a phenomenon previously reported in 15 cases, predominantly in children.

Observation:

  • Two new cases of atypical upper lobe collapse in adults with carcinoma of the bronchus are presented.
  • In one adult case, malignant pleural infiltration was identified as the cause of visceral to parietal pleura adherence.
  • In both cases, the collapsed lobe's appearance on imaging, resembling apical pleural disease, was attributed to compensatory hyperexpansion of the superior segment of the lower lobe.

Findings:

  • Atypical upper lobe collapse can be associated with lung cancer in adults.

Related Experiment Videos

  • Malignant pleural infiltration can cause visceral-parietal pleural adherence leading to this condition.
  • Radiographic findings simulating apical pleural disease can result from adjacent lung hyperinflation.

    • Implications:

    • This presentation highlights the importance of considering atypical upper lobe collapse in the differential diagnosis of apical pleural abnormalities, especially in adults with risk factors for lung cancer.
    • Accurate diagnosis requires careful integration of imaging findings with clinical context.
    • Further investigation may be warranted to rule out underlying malignancy when this pattern is observed.