A case of juxta-articular myxoma of the knee.
This 9-year-old girl presented with a painful mass in the posterolateral aspect of her right knee. Excisional biopsy of the mass revealed a juxta-articular myxoma. The differential diagnosis for such an intra- or periarticular mass should include meniscal cyst, parameniscal cyst, ganglion cyst, juxta-articular myxoma, focal nodular PVNS, and desmoid tumor. Current imaging techniques do not allow differentiation between these benign lesions and low grade myxoid-containing sarcoma.
Daluiski
A
A
Department of Orthopaedic Surgery, UCLA School of Medicine 90024-6952, USA.
Seeger
L L
LL
Doberneck
S A
SA
Finerman
G A
GA
Eckardt
J J
JJ
D002648:Child; D003937:Diagnosis, Differential; D005260:Female; D006801:Humans; D007717:Knee / Q000473:pathology*; D007719:Knee Joint / Q000473:pathology; D008279:Magnetic Resonance Imaging; D009232:Myxoma / Q000175:diagnosis*; D012983:Soft Tissue Neoplasms / Q000175:diagnosis*