Echocardiographic features of an atypical presentation of rapidly progressive cardiac amyloidosis

Figure 3 Abdominal subcutaneous fat aspirate of the patient stained with Congo red, magnification x 30. Amyloid score 3+ (10%-60% of the surface is occupied by amyloid). A: When viewed in normal light, amyloid is stained red; B:The same specimen viewed in polarised light: amyloid shows apple-green birefringence.