Tumours

Most common locations include the pelvis, proximal femur, distal femur, scapula  Primary vs secondary chondrosarcoma Histologic grade correlates with survival Poor prognostic variables-axial and proximal extremity lesions, advanced patient age, inadequate surgical margins Investigations : MRI,CT and needle biopsy Wide surgical excision is the treatment of choice

Benign chondrogenic lesion derived from aberrant cartilage from the perichondral ring Solitary and multiple hereditary forms Autosomal dominant inheritance Mechanical symptoms or symptoms of neurovascular compression X Rays show pedunculated lesions point away from the joint cartilage cap becomes thicker as an adult, need to be concerned for chondrosarcoma transformation Symptomatic cases- excision Complications : Vascular compression, Nerve compression, Tendon compression, Chondrosarcoma, Bursa formation

Benign bone tumor (osteogenic) derived from osteoblasts Common sites : Proximal femur (most common),tibial diaphysis, vertebrae Histology – Nidus of osteoid and immature osteoblasts surrounded by a rim of reactive bone formation X- ray shows radiolucent nidus (< 2 cm) surrounded by reactive bone Treatment – observation and NSAIDs, radiofrequency ablation, surgery Osteoid osteoma in spine can cause painful scoliosis, surgical intervention of…