young male patient suffers from chronic pain in his leg and swelling in the tibia the pain is relieved by salcylate and on x-ray examination

young male patient suffers from chronic pain in his leg and swelling in the tibia the pain is relieved by salcylate and on x-ray examination there was a nidus radiolucent area in the diaphysis serrounded by sclerosis the diagnosis is
a. osteoid osteoma
b. pajets disease
c. osteo sarcoma
d. osteo chondroma
(a)