Background The term hemangiopericytoma (HPC) was first used by Stout and Murray in 1942 to de

Background A late effect of ionizing radiation is the development of sarcoma within the field

Background Osteosarcoma is the most common malignant bone tumor.[1, 2] It is an ancient disea

Background The earliest known case of osteogenesis imperfecta (OI) is in a partially mummifie

Background Osteofibrous dysplasia is a rare, nonneoplastic condition of unknown etiology that

Background Osteoblastoma is a rare primary neoplasm of bone, categorized as a benign bone tum

Background Hemangiomas are abnormal proliferations of blood vessels that may develop in any v

BackgroundGlomus tumors are benign hamartomas originating from the glomus body.[1] The glomus body is a neuromyoarterial

Background Fibrous dysplasia (a term first suggested by Lichtenstein and Jaffe in 1942[1] ) o

Background Neurilemmomas (neurilemomas) are benign, encapsulated tumors of the nerve sheath.

Background Mucous cysts are ganglions of the distal interphalangeal joint (DIP) of the hand o

Practice Essentials Metastatic bone disease occurs when cancer spreads from a primary organ s

Background Osteosarcoma of bone is a high-grade tumor with a long-term survival rate of 60-85

Background Giant cell tumors of the tendon sheath are the second most common tumors of the ha

BackgroundCooper and Travers first described giant cell tumor (GCT) of bone in 1818.[1]  GCTs of bone have been describe

Background Phemister provided the first description of fibrous cortical defect (FCD) in 1929.

Background Fibrosarcoma is a tumor of mesenchymal cell origin that can occur as a soft-tissue

Background Dysplasia epiphysealis hemimelica (DEH), or Trevor disease, is a rare developmenta

Background Skeletal dysplasias are a heterogeneous group of dysplasias that include more than

Practice Essentials Chondrosarcoma is a collective term for a group of tumors that consist pr