Metastasis to the Liver from a Colonic Polyp — Report of a Case

THE central issue of a major controversy involving pathologists and roentgenologists, as well as clinicians, for a number of years has been the question whether adenomatous polyps of the colon become malignant.¹ The malignant potential of villous adenomas is generally accepted, even though surgeons occasionally disagree on the extent of the resection indicated. Before the excellent studies of Spratt, Ackerman and Moyer² and Castleman and Krickstein¹ many clinicians considered all polypoid lesions of the colon potentially or actually malignant. The aforementioned reviews cast considerable doubt on such a premise. Spratt et al.² said, "To date we have not seen or . . .