Pathological features of vascular wall in Dieulafoy's disease

Although there are many clinical reports on Dieulafoy's disease, there are few studies on the pathological structure of vascular wall in Dieulafoy's disease. In this study, the main structural changes of the intima and media of the vascular wall were observed by special staining and immunohistochemical methods in the subjects of Dieulafoy's disease of stomach and intestine. There were many vessels of different sizes in the submucosa, with uneven wall thickness of the vessels. Compared with the normal control group, the content of blue collagen fibers between the vascular smooth muscle cells in the lesion group was increased, the elastic fibers were thickened, and the internal elastic plate was arranged stiff or even interrupted. The increase of collagen and elastic fibers between the smooth muscle cells of the medium membrane and the destruction of the structure of the inner elastic plate may be the structural basis of vascular lesions leading to Dieulafoy's disease.