Leg of a woman in an early stage of moist gangrene

Watercolour drawing of the leg of a young woman, aged 21 years, in an early stage of moist gangrene. From the junction of the upper and middle thirds of the leg downwards the skin is discoloured and of a dusky hue. The line of demarcation is distinct and there is an area of inflammation immediately above the blue and livid skin. Amputation above the knee was performed.