“…incidence of non-specific ulceration of the caecum is difficult to determine, because of the great variation in nomenclature which has resulted from its hitherto unknown ztiology. In addition to "non-specific ulceration of the caecum" (Russell, 1961 ; Benninger ct alii, 1971 ), other terms used include "simple, nonspecific ulcer" (Cameron, 1939 ; Barlow, I94I), "simple penetrating ulcer" (Rosser, I949), "non-specific benign ulcer" ( Lebow and Zabin, 1961 ) , "simple caecal ulceration" ( McKelvie, 1961 ) , "acute solitary ulcer'' (Parker and Serjeant, 1957) and "acute primary (idiopathic) caecitis" (Emmett, 1954). Several authors use "phlegmonous caecitis" to describe a suppurative inflammation of the caecal wall leading to a circumscribed or diffuse inflammatory thickening of the wall (Spivack and B U S C~, 1943;Tagart, 1953;Horne, 1954;Baar, 1955).…”