Adenocarcinoma of the lung laboratory findings

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Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1]; Associate Editor(s)-in-Chief: Shanshan Cen, M.D. [2] Sudarshana Datta, MD [3]

Overview

Laboratory findings consistent with the diagnosis of adenocarcinoma of the lung include low pH, increased arterial pCO2, decreased arterial pO2, increased serum calcium, tumor cells in sputum and pleural effusion.

Laboratory Tests

• The laboratory findings in a patient with adenocarcinoma of the lung include:
  • CBC:
    • Neutropenia in patients with a recent history of chemotherapy
  • Serum electrolytes:
    • Increased serum calcium
  • Arterial blood gas (ABG):
    • Low pH
    • Increased arterial pCO2
    • Decreased arterial O2

• Sputum cytology:
  • Sputum cytology demonstrates tumor cells
• Needle thoracentesis:
  • Pleural effusion cytology demonstrates tumor cells

References

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