01-13-2011, 07:46 PM
Routine chest x-ray of a worker in a tuberculosis sanitorium reveals a focal calcification initially
thought to be a lung lesion. However, x-rays taken in different views establish that the
abnormal calcification involves a structure other than the lung. Physiologic calcification of
which of the following structures would most likely cause the radiologic shadow?
A. Aorta
B. Costal cartilage
C. Intercostal arteries
D. Intercostal veins
E. Vena cava
thought to be a lung lesion. However, x-rays taken in different views establish that the
abnormal calcification involves a structure other than the lung. Physiologic calcification of
which of the following structures would most likely cause the radiologic shadow?
A. Aorta
B. Costal cartilage
C. Intercostal arteries
D. Intercostal veins
E. Vena cava