Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
4
pubmed:dateCreated
1992-7-1
pubmed:abstractText
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.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:status
MEDLINE
pubmed:month
Apr
pubmed:issn
0315-162X
pubmed:author
pubmed:issnType
Print
pubmed:volume
19
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
633-6
pubmed:dateRevised
2004-11-17
pubmed:meshHeading
pubmed:year
1992
pubmed:articleTitle
Elbow synovitis related to an intraarticular osteoid osteoma of the humerus, with immunologic and histochemical studies.
pubmed:affiliation
Department of Rheumatology, Timone Hospital, Marseilles, France.
pubmed:publicationType
Journal Article, Case Reports