Man with Horn that caused by Tumor

In Wuzhen from Xingyang county, Zhang Yuncai, 88 accidentally found a small pimple on his head when he had washed himself in May, 2006. From then on, the pimple grew bigger gradually and turned into a horn-shaped tumor protruding from his head. Now the horn-shaped bump is 5 centimeters long. Fortunately few heard about that news, and decided to ope