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Intralobar Pulmonary Sequestration Showing Increased Serum CA19-9.

Yong Hwan Ahn1, Mi Jin Song, Sang Hyun Park

  • 1Department of Internal Medicine, Plus Internal Medicine Clinic, Suncheon, Korea.

Tuberculosis and Respiratory Diseases
|October 27, 2012
PubMed
Summary

Elevated carbohydrate antigen 19-9 (CA19-9) levels can occur in benign lung conditions like pulmonary sequestration. This case highlights CA19-9 elevation in a patient with intralobar pulmonary sequestration and bronchiectasis, without malignancy.

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Area of Science:

  • Pulmonology
  • Oncology
  • Gastroenterology

Background:

  • Carbohydrate antigen 19-9 (CA19-9) is a tumor marker primarily associated with biliary, pancreatic, and gastrointestinal malignancies.
  • Elevated CA19-9 levels can occasionally be observed in benign pulmonary diseases, including bronchiectasis and pulmonary fibrosis.
  • Intralobar pulmonary sequestration is a rare congenital lung anomaly characterized by abnormal systemic arterial supply and dissociation from the normal tracheobronchial tree.

Purpose of the Study:

  • To report a case of intralobar pulmonary sequestration presenting with elevated serum CA19-9.
  • To discuss the potential association between benign pulmonary conditions and elevated CA19-9 levels.
  • To highlight the importance of considering pulmonary causes for elevated CA19-9 in the absence of gastrointestinal or pancreatic malignancy.
Keywords:
Bronchopulmonary SequestrationCA-19-9 Antigen

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Main Methods:

  • Case report of a 29-year-old male diagnosed with bronchiectasis and intralobar pulmonary sequestration.
  • Serum CA19-9 levels were measured during a general check-up.
  • Diagnostic workup excluded malignancy in the pancreatobiliary and gastrointestinal tracts.

Main Results:

  • The patient presented with elevated serum CA19-9 levels.
  • A diagnosis of intralobar pulmonary sequestration with bronchiectasis was confirmed.
  • No evidence of malignant disease in the gastrointestinal, pancreatic, or biliary systems was found.

Conclusions:

  • Elevated serum CA19-9 can be associated with benign pulmonary diseases, such as intralobar pulmonary sequestration.
  • Pulmonary sequestration should be considered in the differential diagnosis of elevated CA19-9, particularly when malignancy is ruled out.
  • This case underscores the need for a comprehensive evaluation when interpreting CA19-9 levels.