Figure 1 Multiple polyps of mixed morphology in individual 2 of family 1 (A–C) and individual 4 of family 2 (D–F). Panels (A–B) show sections of a mixed hyperplastic‐juvenile polyp featuring (A) dilated, non‐dysplastic glands (×40, original magnification) and (B) hyperplastic glands (×100, original magnification); panel (C) shows a separate mixed adenomatous‐hyperplastic polyp and hyperplastic glands with serrated lumina indicated with an arrow (×100, original magnification). Panels (D–E) show sections of a mixed hyperplastic‐juvenile polyp featuring (D) a dilated, non‐dysplastic juvenile type gland (arrow) (×100, original magnification) and (E) a hyperplastic gland (arrow) with a serrated lumen (×100, original magnification); panel (F) shows a separate tubular adenoma with mildly dysplastic surface tubular glands (arrow) (×100, original magnification).