Presentation
Knee pain and swelling without trauma.
Patient Data
Age: 9 years
Gender: Male
From the case:
Synovial hemangioma
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Soft tissue swelling with round calcifications (phleboliths). Bone is normal.
From the case:
Synovial hemangioma
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A lesion that completely occupies Hoffa’s body and extends into over patellar synovial recess. The lesion has heterogeneous signal, hyperintense on T2 and assumes MDC defining elongated vessels with a serpiginous course and some calcifications. Small formations of adipose tissue in the vascular spaces are detectable.
Case Discussion
Synovial hemangioma is a neoplastic vascular proliferation or the outcome of trauma. Angiography is useful for diagnosis and therapeutic embolization. The differential diagnosis is pigmented villonodular synovitis and lipoma arborescens.
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