Primary Bone Tumors

Osteogenic

Osteoid Osteoma

• Case 18: 23-years old with right arm pain - osteoid osteoma

Osteoblastoma

• Case 19: 60-years old man with a talar lesion - osteoblastoma

Osteosarcoma

• Case 3: 18-years old with knee pain - distal femur osteosarcoma

Chondrogenic

Enchondroma

• Case 26: 30-years with a non-painful swelling along the dorsal of the hand - enchondroma

Chondroblastoma

• Case 6: 22-years old with shoulder pain - proximal humerus chondroblastoma

Chondrosarcoma

• Case 15: 37-years old with shoulder pain - high grade chondrosarcoma

Fibrogenic

Vascular

Hemangioma

• Case 5: 22-years old with paraparesis - hemangioma of the vertebral body

Osteoclastic Giant-Cell Rich

Giant Cell Tumor

• Case 12: 31-years old with knee pain - distal femur giant cell tumor

Aneurysmal Bone Cyst

• Case 24: 18-years old with distal humerus pain - aneurysmal bone cyst

Notochordal

Other Mesenchymal Tumors

Osteofibrous Dysplasia

• Case 9: 3-years old with mild pain and anterior leg swelling - osteofibrous dysplasia tibia

Hematopoietic Neoplasms

Langerhans Cell Histiocytosis

• Case 2: 11-years old with a left iliac bone lesion - LCH

Undifferentiated Small Round Cell Sarcomas

• Case 8: 13-years old with left groin pain and swelling - left iliopubic ramus Ewing sarcoma

Infection / Inflammation

Osteomyelitis

Non-tuberculous

Tuberculosis

• Case 22: 50-years old with a forefoot swelling - 3rd metatarsal tuberculosis

Non-Bacterial Osteitis (NBO)

• Case 16: 21-years old with left clavicular pain and two negative biopsies - clavicular non-bacterial osteitis

Secondary Bone Tumors

Metastasis

• Case 1: 64-years old with a left femoral sclerotic metastasis from carcinoma prostate

Myeloma / Plasmacytoma

• Case 17: 33-years old with a left iliac bone lesion - plasmacytoma - PET/CT showed multiple lesions - multiple myeloma

Lymphoma

Soft Tissue Tumors

Adipocytic

Lipoma

• Case 13 - 45-years old with painless swelling over the elbow - cubital fossa lipoma

Fibroblastic and Myofibroblastic

Myxofibrosarcoma

• Case 7 - 52-years old with a growing swelling along the anterior aspect of the thigh - myxofibrosarcoma

Elastofibroma

• Case 10 - 50-years old with an incidentally detected chest wall mass - elastofibroma

So-Called Fibrohistoycytic

Tenosynovial Giant Cell Tumor

• Case 4: 28-years old with knee pain - intra-articular tenosynovial giant cell tumor extending into the popliteal fossa

Vascular

Pericytic (Perivascular)

Smooth Muscle

Gastrointestinal Stromal Tumor (GIST)

Chondro-osseous

Peripheral Nerve Sheath

Schwannoma

• Case 14 - 60-years old with tingling numbness in the lower limbs - sacral schwannoma

• Case 23 - 39-years old with an incidental posterior mediastinal mass - schwannoma

Tumors of Uncertain Differentiation

• Case 21 - 73-years old with a growing thigh mass - synovial sarcoma

Mimics

Stress/Insufficiency Fracture

Heterotopic Bone Ossification / Myositis Ossificans

• Case 25 - 33-years old - painful elbow - traumatic myositis ossificans

Traumatic Periostitis

• Case 20 - 3-months old with fever and thigh tenderness - traumatic (massage-related) periostitis

Paget

• Case 11 - 72-years old with pain along the iliac crest - Paget disease pelvis