Metastasis to the Liver from a Colonic Polyp

Abstract
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 . . .

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