Design an image of a decidual cast with a wavy, irregular border, featuring a mixture of small, rounded and irregularly-shaped fragments, with a few scattered, dark brown or black spots, on a pale yellowish background.

Create an image of a decidual cast with a smooth, rounded surface, featuring a delicate network of blood vessels and a few scattered, tiny white blood cells, set against a soft, creamy background.

Generate an illustration of a decidual cast image showing a fragmented, amorphous shape with a rough, irregular border, surrounded by a faint outline of a uterine cavity, with a subtle gradient of colors transitioning from pale pink to creamy white.