Question

58-year-old male with buttock pain. what is the most likely diagnosis? a) lymphoma b) chondrosarcoma c) ewing sarcoma d) osteoblastoma e) metastasis f) osteosarcoma

Explanation:

Chondrosarcoma is a primary bone cancer that commonly affects the pelvis (which can cause buttock pain) and is most frequently diagnosed in adults over 40 years old. Lymphoma rarely presents with isolated buttock bone pain as a primary symptom. Ewing sarcoma, osteoblastoma, and osteosarcoma typically occur in younger populations (children, adolescents, or young adults). Metastasis is possible, but chondrosarcoma is a more common primary bone tumor in this age group with this presentation.

Answer:

B) chondrosarcoma