Mucin abnormality of colonic mucosa in patients with familial polyposis coli

Abstract
Colonic mucosa in 62 patients with familial polyposis coli (FPC) was stained by a Periodic Acid-Thionin Schiff/Potassium Hydroxide/Periodic Acid-Schiff method in which the normal colonic mucosa usually stained red and carcinoma stained blue or purple. In FPC, 82.2% stained blue purple; 38.8% stained blue or purple in normal controls. Sialomucin properties of the normal-appearing flat mucosa in FPC are probably different from those of the normal colon; this simple technique may be useful for the early detection of high-risk individuals in the FPC family.