A large staghorn calculus is seen obstructing the renal peli-calyceal system. The lower pole of the kidney shows areas of hemorrhage and necrosis with collapse of cortical areas.

• 图中可见巨大的鹿角样结石嵌顿于肾盂肾盏系统。肾下极可见出血坏死区域，伴有肾皮质萎缩。