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Carcinoid tumourlets associated with diffuse bronchiectasis and intralobar sequestration.

M Dewan1, T S Malatani, O Osinowo

  • 1Department of Pathology, Assir Central Hospital, Abha, Saudi Arabia.

The Journal of the Royal Society for the Promotion of Health
|November 15, 2000
PubMed
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Carcinoid tumourlets in the lung can cause chronic lung disease, especially when associated with intralobar sequestration. Early resection of intralobar sequestration may prevent these complications.

Area of Science:

  • Pulmonary Medicine
  • Thoracic Surgery
  • Pathology

Background:

  • Intralobar sequestration can lead to scarring and subsequent development of carcinoid tumourlets.
  • Carcinoid tumourlets are small neuroendocrine cell proliferations that can cause chronic lung disease.

Observation:

  • A 65-year-old man with a history of recurrent lung infections, dyspnea, and hemoptysis presented with incidentally detected multifocal carcinoid tumourlets.
  • Surgical resection of the left lower lobe revealed diffuse bronchiectasis, intralobar sequestration with aberrant systemic arterial supply, and loss of demarcation between sequestered and normal lung parenchyma.

Findings:

  • The multifocal carcinoid tumourlets were likely an adaptive response to chronic hypoxia.
  • The combination of intralobar sequestration, bronchiectasis, and carcinoid tumourlets is uncommon but associated with un-resected sequestration.

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Implications:

  • This case highlights the potential link between intralobar sequestration, chronic hypoxia, and the development of carcinoid tumourlets.
  • Prompt surgical intervention for intralobar sequestration may prevent the development of these associated pulmonary complications.