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Fig. 1B —Incidental enchondroma in distal femur of 51-year-old woman
with medial meniscal tear as cause of clinical symptoms. Sagittal T1-weighted
(A, TR/TE, 367/20) and fat-suppressed proton density-weighted
(B, 2,250/13) MR images show focal area of marrow replacement with high
signal intensity on long-TR image (arrows) in distal femoral
metaphysis. Lesion is centrally located in medullary canal, has mildly
lobulated borders, and is juxtaposed to old epiphyseal plate
(arrowheads, A).