The morphology of cutaneous burn injuries and the type of heat application.

The morphology of burn injuries in 120 consecutive patients from the Department of Plastic and Reconstructive Surgery, CHR, Hospital B in Lille was correlated to the etiology and type of heat. Analysis identified five typical patterns of cutaneous burn injuries. Jet of flame-pattern from methylated spirits and gasoline detonations: superficial burn injuries; sparing of skin wrinkles and the submental region; absence or small amounts of soot; preference of exposed body regions, esp. the face and hands. Explosion-pattern from explosions and electrothermal injuries: superficial burn injuries; sparing of skin wrinkles but not of the submental region; soot; preference of exposed body regions. Alveolar soot arrangement and metallisation in electrothermal injuries. Considerable third-degree burns in dust explosions. Flame-pattern from direct flame effects due to burning gasoline or oil, open fires or ignited clothing: nonuniform depth including large third-degree burns; no sparing of the submental region; soot; preference of body regions covered by clothing. Immersion-pattern: superficial (bullous) injuries; blurred junction between scalded and unscalded areas; extremities, buttocks, and back are favourite sites; cave child abuse: waterlines and zebra-burns. Spilling-pattern: superficial injuries; sharp junction between scalded and unscalded areas; head, anterior trunk, and upper extremities are favourite sites; running off and splashing stains. Consideration of these patterns can assist the reconstruction in fire investigations or unclear scaldings. In cases of suspected arson, a typical burn injury pattern or a single finding not compatible with the rest of the pattern can disprove a suspect or raise the level of suspicion.