Fibrinous pericarditis
Lt. The pericardium has been opened to reveal the surface of the heart. There are thin strands of fibrinous exudate that extend from the parietal to visceral pericardium.. This is typical for a fibrinous pericarditis. Rt. More florid example of fibrinous pericarditis.The epicardial surface of the heart shows a shaggy fibrinous exudate. This is another example of fibrinous pericarditis. This appearance has often been called a "bread and butter" pericarditis, but you would have to drop your buttered bread on the carpet to really get this effect. The fibrin often results in the finding on physical examination of a "friction rub" as the strands of fibrin on epicardium and pericardium rub against each other.
Fibrinous pericarditis