| Tumor Unknown Conference Department of Orthopaedics |
| Case 1: 68 year old male with mass noted in left leg four weeks ago Answer: Liposarcoma |
| Case 2: 22 year old female with a two month history of right knee pain Answer: Giant Cell Tumor |
| Case 3: 23 year old man with right knee pain, swelling for the past two months Answer: Osteosarcoma |
| Case 4: 12 year old girl with a three month history of left hip pain with ambulation and activities Answer: Eosinophilic Granuloma |
| Case 5: 25 year old woman with a six month history of left knee pain Answer: Fibrous Dysplasia |
| Case 6: 27 year old male presents with pain in his left shoulder for about one year Answer: Aneurysmal Bone Cyst |
| Case 7: 20 year old male presents after transfer to BGH with subtrochanteric left femur fracture Answer: Lymphoma |
| Case 8: 50 year old woman with a two year history of low back pain Answer: Schwannoma |