“…Cleansing was effected by soap enema, and purgatives were not given by mouth. Although in this investigation malignant cells were observed in one case of carcinoma of the caecum, the saline enema technique described by Rubin et al (1953) and Galambos, Massey, Klayman, and Kirsner (1956) is more likely to collect cells exfoliated from lesions in the right side of the colon.…”