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*Benign fibrous tissue. | *Benign fibrous tissue. | ||
*Nests of chondrocytes (as in immature [[cartilage]]). | *Nests of chondrocytes (as in immature [[cartilage]]). | ||
*+/-Synovium with or without proliferation.<ref name=pmid16393686/> | |||
*+/-Neovascularization of disc material.<ref name=pmid16393686/> | |||
DDx: | |||
*[[CPPD]].<ref name=pmid16393686>{{Cite journal | last1 = Pytel | first1 = P. | last2 = Wollmann | first2 = RL. | last3 = Fessler | first3 = RG. | last4 = Krausz | first4 = TN. | last5 = Montag | first5 = AG. | title = Degenerative spine disease : pathologic findings in 985 surgical specimens. | journal = Am J Clin Pathol | volume = 125 | issue = 2 | pages = 193-202 | month = Feb | year = 2006 | doi = 10.1309/89FV-RT04-EGBV-EUD9 | PMID = 16393686 }}</ref> | |||
*[[Synovial cyst]]. | |||
*Malignancy - very rare if not suspected. | |||
**''Not'' reported in a series of 985 specimens.<ref name=pmid16393686/> | |||
===Images=== | ===Images=== |
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