Abstract
We report on the clinical, imaging-including ultrasound, computed tomography, and magnetic resonance imaging-and histological features of a fibroma of the tendon sheath with mineralized chondroid and osseous metaplasia, presenting as a semimembranosus bursitis. The anatomical characteristics of the semimembranosus bursa are demonstrated by dissection in a cadaveric specimen and correlated with the imaging findings in our patient.
MeSH terms
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Adolescent
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Bursa, Synovial / pathology
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Bursa, Synovial / surgery
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Bursitis / diagnosis
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Bursitis / etiology*
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Calcinosis / diagnosis
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Diagnosis, Differential
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Fibroma / complications
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Fibroma / diagnosis*
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Fibroma / surgery
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Humans
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Knee Joint* / diagnostic imaging
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Knee Joint* / pathology
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Magnetic Resonance Imaging
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Male
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Soft Tissue Neoplasms / complications
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Soft Tissue Neoplasms / diagnosis*
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Soft Tissue Neoplasms / surgery
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Tendons / diagnostic imaging
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Tendons / pathology*
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Tomography, X-Ray Computed
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Ultrasonography