Most common primary malignant bone tumor in adolescents (after myeloma overall). Sites: metaphysis of long bones—distal femur, proximal tibia, proximal humerus. X‑ray: sunburst periosteal reaction, Codman triangle, mixed lytic–sclerotic lesion. Work‑up: MRI for local staging, CT chest for metastasis, bone scan for skip lesions. Treatment: neoadjuvant chemotherapy → wide resection/limb salvage/rotationplasty → adjuvant chemotherapy.
You're handed an X-ray. There's a lytic lesion in the distal femur of a 17-year-old. Where do you even start? 🤔 Here's the systematic approach ever...
Periosteal reactions are one of the most underrated signs on a plain X-ray. One look at the pattern tells you whether you're dealing with something be...
What is the most common site for osteosarcoma?
Which imaging finding is characteristic of osteosarcoma?
Which of the following is NOT a risk factor for developing osteosarcoma?
What is the primary treatment modality for localized osteosarcoma?
Which of the following statements about telangiectatic osteosarcoma is true?
What is the typical age group for the primary peak incidence of osteosarcoma?
Which feature is characteristic of parosteal osteosarcoma?
What is the primary goal of neoadjuvant chemotherapy in osteosarcoma treatment?
What is the 5-year survival rate for localized conventional osteosarcoma?
Which of the following is a common symptom of osteosarcoma?
