The molecular basis of “Turcot syndrome”: S.R. Hamilton, B. Liu, R.E. Parsons, N.C. Papadopolous, J. Jen, S.M. Powell, A.J. Krush, T. Berk, Z. Cohen, B. Tetu, P.C. Burger, P.A. Wood, F. Taqi, S.V. Booker, G.M. Petersen, G.J.A. Offerhaus, A.C. Tersmette, F.M. Giardiello, B. Vogelstein, K.W. Kinzler. Depts. of Pathology, Oncology, Medicine, & Epidemiology, The Johns Hopkins University Schools of Medicine & Hygiene and Public Health, Baltimore, MD; Mt. Sinai Hospital, Toronto, Ontario, Canada; Laboratoire d'Anatomie Pathologique, L'Hotel-Dieu de Quebec, Quebec, Canada; & Dept. of Medicine, Veterans Admin. Medical Center & Albany Medical College Albany, NY