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Difference between revisions of "Intramuscular myxoma"
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| Caption = Intramuscular myxoma. | | Caption = Intramuscular myxoma. | ||
| Micro = | | Micro = myxoid stroma with bland stellate cells and/or bland spindle cells, intramuscular, usu. hypervascular and hypercellular | ||
| Subtypes = | | Subtypes = hypercellular, hypervascular | ||
| LMDDx = [[myxoid lesions]] | | LMDDx = [[myxoid lesions]] | ||
| Stains = | | Stains = | ||
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==Microscopic== | ==Microscopic== | ||
Features:<ref name=pmid15663047/> | Features:<ref name=pmid15663047/><ref name=pmid9777984/> | ||
*Myxoid stroma. | *Myxoid stroma - '''key feature''' | ||
** | *Bland stellate or spindle cells. | ||
** | **Typically paucicellular. † | ||
*Contained within skeletal muscle. | **Usually with scant vascularity. ‡ | ||
*Contained within skeletal muscle - '''essential'''. | |||
DDx: | Note: | ||
*† A hypercellular variant exists. | |||
*‡ A hypervascular variant exists. | |||
DDx:<ref name=pmid9777984>{{Cite journal | last1 = Nielsen | first1 = GP. | last2 = O'Connell | first2 = JX. | last3 = Rosenberg | first3 = AE. | title = Intramuscular myxoma: a clinicopathologic study of 51 cases with emphasis on hypercellular and hypervascular variants. | journal = Am J Surg Pathol | volume = 22 | issue = 10 | pages = 1222-7 | month = Oct | year = 1998 | doi = | PMID = 9777984 }}</ref> | |||
*[[Low-grade fibromyxoid sarcoma]].<ref name=pmid23685711>{{Cite journal | last1 = Yamashita | first1 = H. | last2 = Endo | first2 = K. | last3 = Takeda | first3 = C. | last4 = Teshima | first4 = R. | last5 = Osaki | first5 = M. | last6 = Yoshida | first6 = H. | title = Intramuscular myxoma of the buttock mimicking low-grade fibromyxoid sarcoma: diagnostic usefulness of MUC4 expression. | journal = Skeletal Radiol | volume = | issue = | pages = | month = May | year = 2013 | doi = 10.1007/s00256-013-1641-4 | PMID = 23685711 }}</ref> | *[[Low-grade fibromyxoid sarcoma]].<ref name=pmid23685711>{{Cite journal | last1 = Yamashita | first1 = H. | last2 = Endo | first2 = K. | last3 = Takeda | first3 = C. | last4 = Teshima | first4 = R. | last5 = Osaki | first5 = M. | last6 = Yoshida | first6 = H. | title = Intramuscular myxoma of the buttock mimicking low-grade fibromyxoid sarcoma: diagnostic usefulness of MUC4 expression. | journal = Skeletal Radiol | volume = | issue = | pages = | month = May | year = 2013 | doi = 10.1007/s00256-013-1641-4 | PMID = 23685711 }}</ref> | ||
*[[Myxoid liposarcoma]]. | |||
*[[Myxofibrosarcoma]] | |||
===Images=== | ===Images=== | ||