Elbow synovitis related to an intraarticular osteoid osteoma of the humerus, with immunologic and histochemical studies. 1992

P Lafforgue, and E Senbel, and J Boucraut, and N Horschowsky, and M M Golstein, and M A Chrestian, and D Bernard, and P C Acquaviva
Department of Rheumatology, Timone Hospital, Marseilles, France.

An 18-year-old boy presented with elbow synovitis. Investigations disclosed an osteoid osteoma of the coronoid fossa confirmed by histology. The synovium appeared hypertrophic with histologic patterns resembling those seen in synovitis in rheumatoid arthritis. Immunohistochemistry showed lymphoid follicles composed of B and T cells. T lymphocytes were mainly of the CD4 phenotype, showing soluble interleukin 2 receptor (IL-2r) in places but were poorly positive for DR antigen. C3, C4, B factor and CH50 activity were decreased and interleukin 1 and soluble IL-2r were increased in synovial fluid. They were normal in peripheral blood except for a slight decrease in C4. These data suggest a local immunologic activation induced by osteoid osteoma, the mechanism of which remains hypothetic. Immunomodulating mediator diffusion from osteoid osteoma itself or as a secondary response to tumoral antigen release could be advocated. Whether such phenomena are specific to the epiphyseal location of osteoid osteoma needs clarification.

UI MeSH Term Description Entries
D007150 Immunohistochemistry Histochemical localization of immunoreactive substances using labeled antibodies as reagents. Immunocytochemistry,Immunogold Techniques,Immunogold-Silver Techniques,Immunohistocytochemistry,Immunolabeling Techniques,Immunogold Technics,Immunogold-Silver Technics,Immunolabeling Technics,Immunogold Silver Technics,Immunogold Silver Techniques,Immunogold Technic,Immunogold Technique,Immunogold-Silver Technic,Immunogold-Silver Technique,Immunolabeling Technic,Immunolabeling Technique,Technic, Immunogold,Technic, Immunogold-Silver,Technic, Immunolabeling,Technics, Immunogold,Technics, Immunogold-Silver,Technics, Immunolabeling,Technique, Immunogold,Technique, Immunogold-Silver,Technique, Immunolabeling,Techniques, Immunogold,Techniques, Immunogold-Silver,Techniques, Immunolabeling
D008297 Male Males
D010017 Osteoma, Osteoid A benign osteoblastic tumor with central vascularized nidus surrounded by normal reactive bone. It occurs especially in second decade of life most commonly in the femoral neck but can occur in any bone and any site within a bone. Osteoid Osteoma,Osteoid Osteomas,Osteomas, Osteoid
D001859 Bone Neoplasms Tumors or cancer located in bone tissue or specific BONES. Bone Cancer,Cancer of Bone,Cancer of the Bone,Neoplasms, Bone,Bone Neoplasm,Neoplasm, Bone
D004551 Elbow Joint A hinge joint connecting the FOREARM to the ARM. Elbow Joints,Joint, Elbow,Joints, Elbow
D006801 Humans Members of the species Homo sapiens. Homo sapiens,Man (Taxonomy),Human,Man, Modern,Modern Man
D006811 Humerus Bone in humans and primates extending from the SHOULDER JOINT to the ELBOW JOINT. Humeri,Greater Tubercle,Humeral Greater Tuberosity,Humeral Lesser Tuberosity,Lesser Tubercle,Olecranon Fossa,Olecranon Fossi,Greater Tubercles,Greater Tuberosities, Humeral,Greater Tuberosity, Humeral,Humeral Greater Tuberosities,Humeral Lesser Tuberosities,Lesser Tubercles,Lesser Tuberosities, Humeral,Lesser Tuberosity, Humeral,Tubercle, Greater,Tubercles, Greater
D000293 Adolescent A person 13 to 18 years of age. Adolescence,Youth,Adolescents,Adolescents, Female,Adolescents, Male,Teenagers,Teens,Adolescent, Female,Adolescent, Male,Female Adolescent,Female Adolescents,Male Adolescent,Male Adolescents,Teen,Teenager,Youths
D013583 Synovial Membrane The inner membrane of a joint capsule surrounding a freely movable joint. It is loosely attached to the external fibrous capsule and secretes SYNOVIAL FLUID. Synovium,Membrana Synovialis Capsulae Articularis,Membrane, Synovial,Membranes, Synovial,Synovial Membranes
D013585 Synovitis Inflammation of the SYNOVIAL MEMBRANE. Plica Syndrome,Synovial Plica Syndrome,Synovial Hypertrophy,Synovial Thickening,Hypertrophies, Synovial,Hypertrophy, Synovial,Plica Syndrome, Synovial,Synovial Hypertrophies,Synovial Thickenings,Synovitides,Thickening, Synovial,Thickenings, Synovial

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