“…Only 11 instances of survival have so far been recorded, by Rogers (1934), Arden (1946Arden ( , 1951, Potter (1952), Arden, Dique and Wrench (1955), Bret, Jamain and Coupe (1956), Greaves (1955), Mason Brown (1957) and Dennison, cited by Mason Brown. It therefore seems worth recording that we have encountered two cases of this condition within a period of four months.…”