(1) Veins typically have 3 layers: tunica intima, media, and adventitia .(2) The adventitia is a dense collagenous tissue that merges with the adventitia of the bladder and rectum and is highly vascular.(3) The adventitia is rich in collagen bundles, and contains some cells that may be fibroblasts or macrophages.(4) The pathology findings consist of a cyst of gelatinous contents between the media and adventitia causing luminal compression.(5) The adventitia contains the cartilaginous rings interconnected by connective tissue.(6) The arteries were most susceptible, with bruising of the intima and adventitia and separation of the media from the vessel walls.(7) With still greater increases in caliber, a distinct intima, media, and adventitia become recognizable.(8) A similar sheet of human fibroblasts was wrapped around the media to provide the adventitia .(9) The adventitia was stripped, and the endothelium was removed.(10) This xanthogranulomatous tissue involved the adventitia of large-caliber vessels and infiltrated the atrial myocardium.(11) It diffusely replaced and expanded the adventitia of the aorta.(12) There is an intense inflammatory reaction concentrated primarily in the adventitia of this blood vessel with some extension into the tunica media.(13) The submucosa, muscularis propria and adventitia of the esophagus were normal.(14) The outer layer of veins comprises the tunica adventitia .(15) The perimeters of the airway lumen and of the adventitia subtended two areas.(16) The images span the entire thickness of the vascular wall from the intima to the adventitia .
