Which of the statements on invasive thymoma is incorrect（）
A. Multiple metastases are likely to happen in the lung
B. CT manifests as an irregular mass with unclear edges
C. The main sign of mediastinal invasion is the disappearance of fat space
D. It can grow along the pleura to the posterior mediastinum and pericardium on the same side
E. It can enter the abdominal cavity through the aortic orfice and diaphragmatic aperture
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Bronchial cyst and lymphoma are most likely to locate in_（）
A. upper middle region of middle mediastinum
B. upper middle region of middle mediastinum
C. middle anterior mediastinum
D. lower middle mediastinum
Which of the following diaphragm images is abnormal（）
A. Turtle sign
B. The atelectasis is smooth and wavy
C. Adult, the right diaphragmatic top is often slightly higher than the left diaphragm
D. The anterior costophrenic angle is higher than the posterior one
Heart, ascending aorta, aortic arch, trachea, main bronchus and their lymph nodes are located in____（）
A. middle mediastinum
B. anterior mediastinum
C. posterior mediastinum
D. superior mediastinum
The exudate produced by pleurisy can be_____（）
A. all of the above
B. bloody
C. purulent
D. purulent
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