Answer: Thoracic Neurilemoma
Figure 1. Chest radiograph demonstrating a large right-sided chest mass compressing the right upper lobe of the lung.
Figure appears in full text version.
|
|
|
|
|
Figure 2. Computed tomographic scan of the chest demonstrating compression of the right upper lobe of the lung secondary to a mass.
Figure appears in full text version.
|
|
|
|
|
The mass was confirmed to be a benign neurilemoma, with less than 1 mitosis per 25 high-power fields. Magnetic resonance imaging performed before the operation showed no sign of spinal extension of the tumor. Intraoperatively, it appeared to originate from a thoracic nerve. Despite the large size of the tumor, we found no signs or symptoms of von Recklinghausen disease.
Neurogenic tumors account for 75% of all tumors located in the posterior mediastinum.1 A neurilemoma, or schwannoma, is a benign, slow-growing tumor that often arises from the nerve sheath of a spinal nerve. Approximately 90% of all neurilemomas originate in the posterior mediastinum. Infrequently, they have a thoracic . . . [Full Text of this Article]
