Surface is smooth and even, with homogeneous color, striae (lineae albicantes)—silvery white, linear, jagged marks, no lesions, (+) well-healed surgical scars, veins usually are not seen, but a fine venous network may be visible in thin persons, increased peristaltic waves (intestinal obstruction), increased pulsations of an abdominal aortic aneurysm (AAA) or of increased pulse pressure