M
Mediastinal Enlargement
Differential Diagnoses for Lesions Associated With Focal Mediastinal Enlargement
| Region | Diseases |
|---|---|
| Cranioventral | Lymphadenopathy; abscess; thymic mass; ectopic thyroid; hematoma; granuloma; obesity; vascular mass (aorta, cranial vena cava); esophageal mass, foreign body, or dilatation; tracheal mass |
| Craniodorsal | Esophageal mass, foreign body, or dilatation; heart base mass; neurogenic tumor; paraspinal or spinal mass; hematoma; lymphadenopathy; aortic stenosis; patent ductus arteriosus; abscess; tracheal mass |
| Perihilar | Lymphadenopathy; left atrial enlargement; esophageal mass, foreign body, or dilatation; main pulmonary artery mass (poststenotic dilatation); heart base or right atrial mass; spinal or paraspinal mass |
| Caudodorsal | Esophageal mass, foreign body, or dilatation; hiatal hernia; diaphragmatic hernia or mass; spirocercosis; spinal or paraspinal mass; aortic aneurysm; gastroesophageal intussusception |
| Caudoventral | Diaphragmatic hernia; peritoneopericardial diaphragmatic hernia; abscess; granuloma; hematoma |
From Ettinger S, Feldman E: Textbook of veterinary internal medicine, ed 6, St Louis, 2005, Saunders.
