tokens: In angiodysplasia , ectatic vessels in the mucosa appeared to contain less collagen type IV than similarly sized vessels in the submucosa , and perforating vessels appeared in many cases to lose staining at the level of the muscularis mucosae .
folded_tokens: in angiodysplasium , ectatic vessel in the mucosa appear to contain less collagen type iv than similarly size vessel in the submucosa , and perforate vessel appear in many case to lose staining at the level of the musculari mucosa .