Patterned lividity - the 'underwear sign'.

Lividity or livor mortis occurs when blood settles in dependent areas after death due to gravitational effects. Patterned lividity may result from a body lying against a variety of surfaces. Two case are presented where lividity was prevented by tight fitting elastic underwear except in areas where letters from the manufacturers' names had elevated the material, thus permitting capillaries in the underlying skin to fill. This type of patterned lividity may act as a useful record of the type of clothing being worn at the time of death and in the hours following.