Spontaneous epidural hematoma discovered upon evaluation of a calcified disk herniation.

A female renal transplant recipient had intractable femoral neuralgia due to a large calcified disk herniation. She then developed an anterior epidural hematoma above the herniation, from T12 to L2, in the absence of clotting disorders. Spontaneous resorption of the hematoma occurred. The femoral neuralgia resolved after surgical treatment of the herniation. The location of the hematoma suggests that the calcified disk may have torn the fragilized epidural venous network.