Review Question - QID 218586

A 28-year-old male presents to your office to evaluate left index finger pain when grabbing weights in the gym and left shin pain after running several miles. He was told as a child that he has a rare disorder affecting multiple bones, but he can't recall its name. Figures A and B are his updated finger radiographs and axial MRI images, while Figures C and D are radiographs and MRI images of his left tibia. Figure E shows low and high-power histology images of his bone disorder. Which of the following is descriptive of the patient's underlying condition?