<unk>  is a rare syndrome characterized by multiple polyps of the digestive tract. It is sporadic (i.e. it does not seem to be a hereditary disease), and it is currently considered acquired and idiopathic (i.e. cause remains unknown). About two-thirds of patients are of Japanese descent and the male to female ratio is 3:2. It was characterized in 1955 by internal medicine physician Leonard Wolsey<unk>  Jr. and radiologist Wilma Jeanne<unk> .
Cronkhite–Canada syndrome
Ardalan–Shoja–Kiuru syndrome
Zamzam–Sheriff–Phillips syndrome
Grinspan's syndrome
Worster-Drought syndrome
Hapnes Boman Skeie syndrome
Laugier–Hunziker syndrome
Cohen syndrome