Abstract
Pulmonary EmphysemaThe morphologic appearances of emphysema have now been well defined, and provided the pathologist is aware of the importance of inflating the lungs before they are fixed, it is unlikely that there will be much confusion about the diagnosis. Silverton53 has reviewed methods of fixing the lung in inflation, and Thurlbeck18 has documented the underdiagnosis of emphysema that will result if the lung is examined only in the collapsed state. The frequency of morphologic emphysema in random inflated lungs is high, approaching 50 per cent in men 60 years of age.20 Although some differences of interpretation can be . . .