"Dr Benjamin Felson (1913-1988) and, his brother Dr Henry Felson (1907-1998), were American radiologists who popularised this sign 1. However, it was the Felsons themselves who state that Dr H (Henry) Kennon Dunham (1872-1944), an American chest physician and radiologist, was the first to describe the sign 15 years earlier (late 1920s) 1,5."
"Dr Benjamin Felson (1913-1988) and, his brother Dr Henry Felson (1907-1998), were American radiologists who popularised this sign 1. However, it was the Felsons themselves who state that Dr H (Henry) Kennon Dunham (1872-1944), an American chest physician and radiologist, was the first to describe the sign 15 years earlier (late 1920s) 1,5."
"The silhouette sign is somewhat of a misnomer and, in the true sense, actually denotes the loss of a silhouette; thus, it is sometimes also known as the loss of silhouette sign or loss of outline sign 4."
"Recognition of this sign is useful in localising areas of airspace opacities, atelectasis or mass within the lung, with the loss of these normal silhouettes on frontal chest radiographs being generally indicative of the site of pathology 3,4:"
"Dr Benjamin Felson (1913-1988) and, his brother Dr Henry Felson (1907-1998), were American radiologists who popularised this sign 1. However, it was the Felsons themselves who state that Dr H (Henry) Kennon Dunham (1872-1944), an American chest physician and radiologist, was the first to describe the sign 15 years earlier (late 1920s) 1,5."