Intramuscular myxoma
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Intramuscular myxoma is an uncommon benign intramuscular myxoid lesion.
| Intramuscular myxoma | |
|---|---|
| Diagnosis in short | |
 Intramuscular myxoma. | |
|
| |
| LM | myxoid stroma with bland stellate cells and/or bland spindle cells, intramuscular, usu. hypervascular and hypercellular |
| Subtypes | hypercellular, hypervascular |
| LM DDx | myxoid lesions |
| Site | soft tissue |
|
| |
| Prevalence | rare |
| Prognosis | benign, rarely recur |
General
Gross
- Usually thigh muscles.[2]
Microscopic
- Myxoid stroma - key feature
- Bland stellate or spindle cells.
- Typically paucicellular. †
- Usually with scant vascularity. ‡
- Contained within skeletal muscle - essential.
Note:
- † A hypercellular variant exists.
- ‡ A hypervascular variant exists.
DDx:[3]
Images
Low mag. (WC/Nephron)
Intermed. mag. (WC/Nephron)
Intermed. mag. (WC/Nephron)
Intermed. mag. (WC/Nephron)
High mag. (WC/Nephron)
Very high mag. (WC/Nephron)
See also
References
- ↑ 1.0 1.1 Charron, P.; Smith, J. (Dec 2004). "Intramuscular myxomas: a clinicopathologic study with emphasis on surgical management.". Am Surg 70 (12): 1073-7. PMID 15663047.
- ↑ 2.0 2.1 2.2 Silver, WP.; Harrelson, JM.; Scully, SP. (Oct 2002). "Intramuscular myxoma: a clinicopathologic study of 17 patients.". Clin Orthop Relat Res (403): 191-7. PMID 12360026.
- ↑ 3.0 3.1 Nielsen, GP.; O'Connell, JX.; Rosenberg, AE. (Oct 1998). "Intramuscular myxoma: a clinicopathologic study of 51 cases with emphasis on hypercellular and hypervascular variants.". Am J Surg Pathol 22 (10): 1222-7. PMID 9777984.
- ↑ Yamashita, H.; Endo, K.; Takeda, C.; Teshima, R.; Osaki, M.; Yoshida, H. (May 2013). "Intramuscular myxoma of the buttock mimicking low-grade fibromyxoid sarcoma: diagnostic usefulness of MUC4 expression.". Skeletal Radiol. doi:10.1007/s00256-013-1641-4. PMID 23685711.