caz 2
Posted: Sun Aug 31, 2003 1:17 am
A 55-year-old man has been a cigarette smoker for the past 40 years. He has recently noted some blood-streaked sputum on coughing up sputum in the morning. He also has back pain. A chest radiograph shows a small 3 cm right hilar mass with several 1 to 2 cm peripheral lung nodules. A bone scan reveals multiple areas of increased uptake in the vertebrae, ribs, and pelvis. A sputum cytology reveals the presence of clusters of small cells having hyperchromatic nuclei and almost no cytoplasm. Which of the following laboratory test findings is he most likely to have as a consequence of his lung disease ?