05-07-2012, 02:55 PM
4. A previously healthy 67-year-old man is admitted to the hospital because of lethargy, confusion, muscle cramps, and decreased appetite for 7 days. He appears ill. His temperature is 37 C (98.6 F), blood pressure is 120/70 mm Hg, pulse is 98/min, and respirations are 20/min. Breath sounds are diminished at the right lung base. Neurologic examination shows no abnormalities except for lethargy. Serum studies show:
Na+ 114 mEq/L
K+ 4.3 mEq/L
Creatinine 1 mg/dL
Thyroid-stimulating hormone 4.1 μU/mL
An x-ray film of the chest shows a 2-cm nodule in the right lower lobe and mediastinal adenopathy. A biopsy specimen of the nodule is most likely to show which of the following?
A) Adenocarcinoma
B) Clear cell carcinoma
C) Mesothelioma
D) Small cell carcinoma
E) Squamous cell carcinoma
Na+ 114 mEq/L
K+ 4.3 mEq/L
Creatinine 1 mg/dL
Thyroid-stimulating hormone 4.1 μU/mL
An x-ray film of the chest shows a 2-cm nodule in the right lower lobe and mediastinal adenopathy. A biopsy specimen of the nodule is most likely to show which of the following?
A) Adenocarcinoma
B) Clear cell carcinoma
C) Mesothelioma
D) Small cell carcinoma
E) Squamous cell carcinoma
)