Erschienen in:
01.08.2008 | Case Report
The “mini brain” appearance of plasmacytoma in the appendicular skeleton
verfasst von:
N. Subhas, T. W. Bauer, M. J. Joyce, M. Sundaram
Erschienen in:
Skeletal Radiology
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Ausgabe 8/2008
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Abstract
We report on the case of a 70-year-old woman presenting with right hip pain. Radiographs of the right hip demonstrated a well-defined large lytic lesion in the proximal right femur, with prominent trabeculae situated peripherally and extending into the lesion in a “spoke-wheel” pattern. Magnetic resonance imaging (MRI) demonstrated solid enhancing marrow-replacing lesion, with intervening linear nonenhancing areas of low T2 signal intensity. The MRI appearance resembled that of a small brain or “mini brain”. Biopsy specimen demonstrated predominantly mature plasma cells, with occasional admixed immature forms. A diagnosis of plasmacytosis, consistent with myeloma, was made. This case illustrates a rare but seemingly characteristic “mini brain” appearance of plasmacytoma, which, to date, has only been reported in the spine and has not been observed in other bony lesions.