Recognizing Diseases of the Chest

Chapter 12 Recognizing Diseases of the Chest


In this chapter, you’ll learn how to recognize mediastinal masses, benign and malignant pulmonary neoplasms, pulmonary thromboembolic disease, and selected airway diseases.




TABLE 12-1 CHEST ABNORMALITIES DISCUSSED ELSEWHERE IN THIS TEXT
























Topic Appears in
Atelectasis Chapter 5
Pleural effusion Chapter 6
Pneumonia Chapter 7
Pneumothorax, pneumomediastinum, and pneumopericardium Chapter 8
Cardiac and thoracic aortic abnormalities Chapter 9
Chest trauma Chapter 17


Mediastinal Masses








Anterior Mediastinum





TABLE 12-2 ANTERIOR MEDIASTINAL MASSES (“3 Ts and an L”)


















Mass What to Look For
Thyroid goiter The only anterior mediastinal mass that routinely deviates the trachea
Lymphoma (lymphadenopathy) Lobulated, polycyclic mass, frequently asymmetrical, that may occur in any compartment of the mediastinum
Thymoma Look for a well-marginated mass that may be associated with myasthenia gravis
Teratoma Well-marginated mass that may contain fat and calcium on CT scans


Thyroid Masses










Lymphoma







image Mediastinal lymphadenopathy in Hodgkin disease is usually bilateral and asymmetrical (Fig. 12-4). In addition, asymmetrical hilar adenopathy is associated with mediastinal adenopathy in many patients with Hodgkin disease.







TABLE 12-3 SARCOIDOSIS VS. LYMPHOMA


















Sarcoid Lymphoma
Bilateral hilar and right paratracheal adenopathy classic combination More often mediastinal adenopathy, associated with asymmetrical hilar enlargement
Bronchopulmonary nodes more peripheral Hilar nodes more central
Pleural effusion in about 5% Pleural effusion more common—in 30%
Anterior mediastinal adenopathy is uncommon Anterior mediastinal adenopathy is common


Thymic Masses











Posterior Mediastinum






Neurogenic Tumors






image Neurogenic tumors will produce a soft tissue mass, usually sharply marginated, in the paravertebral gutter (Fig. 12-9). Both benign and malignant tumors may erode ribs (Fig. 12-10A). They may enlarge the neural foramina producing dumbbellshaped lesions that arise from the spinal canal but project through the neural foramen into the mediastinum (Fig. 12-10B).


Mar 2, 2016 | Posted by in GENERAL RADIOLOGY | Comments Off on Recognizing Diseases of the Chest

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