PMC5345968_01
Contrast enhanced transverse axial CT image of the thorax at the subcarinal level demonstrates irregular circumferential pleural thickening in the right hemithorax, including thickening of the right mediastinal pleura (solid arrow). Mild thickening of the left posterior costal and mediastinal pleura were also noted (open arrow).
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This (Fig. 1) demonstrated irregular circumferential pleural thickening in the right hemithorax, including thickening of the mediastinal pleura, and mild thickening of the left mediastinal and posterior costal pleura.
Contrast enhanced transverse axial CT image of the lower thorax demonstrates small rim enhancing loculated effusion in the right posterolateral pleural space, trace left pleural effusion, circumferential right pleural thickening including nodular thickening of right oblique fissure (solid arrow) and mild thickening of the left posterior costal pleura and left oblique fissure (open arrow).
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Additionally, there was nodular thickening of the right oblique fissure, and mild nodularity in the left oblique fissure (Fig. 2).
A) Microscopic view of the pleural biopsy showing the typical amorphous appearance of amyloid. Amyloid infiltrates the lung (top of field) and the chest wall fat (bottom of field). B) Polarized light image of a Congo Red stained section showing typical green birefringence of amyloid (material that polarizes with an orange color is collagen).
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However, on microscopic examination, no neoplasm was found; rather there was diffuse infiltration of the chest wall fat and subpleural lung tissue by amyloid (Fig. 3).