Osseous change adjacent to soft-tissue XXXX of the extremities: correlation with lesion size and proximity to bone.

@entity1 @entity2695
OBJECTIVE: The purpose of this study was to describe the findings of MR imaging and radiographic changes that occur in osseous structures adjacent to soft-tissue @entity2695 of the extremities and to correlate them with @entity1 symptomatology, the size of the @entity2695 , and their proximity to adjacent bone. MATERIALS AND METHODS: We retrospectively reviewed the radiographs and MR images of 35 @entity1 with soft-tissue @entity2695 of the extremities. The pattern and extent of the osseous change were categorized as periosteal, cortical, or medullary. Symptomatology, size, and proximity of the @entity2695 to the adjacent bone were compared with the presence or absence of osseous change. Statistical analysis was performed using the Student's t test. RESULTS: Osseous change was noted on radiographs in 13 (37%) of 35 @entity1 and on MR images in 11 (31%) of 35 @entity1 with a total of 14 @entity1 (40%) showing osseous change on at least one study. Periosteal change was present in eight (23%) of 35 @entity1 ; cortical change, in 11 (31%) of 35 @entity1 ; and medullary change, in 10 (29%) of 35 @entity1 . Direct contact between the soft-tissue @entity2695 and the adjacent bone was seen in 13 of 14 @entity1 with osseous change. In those @entity1 without osseous change, the average distance between the soft-tissue @entity2695 and bone was 1.06 cm (range, 0-4 cm). No correlation was found between symptoms and the presence of osseous change. CONCLUSION: Soft-tissue @entity2695 of the extremities frequently result in adjacent osseous change that can be categorized as either periosteal, cortical, or medullary. Only medullary changes correspond with @entity2695 size, whereas all three categories of change correlate with the proximity of the @entity2695 to the adjacent bone. The presence of osseous change does not correlate with @entity1 symptomatology.
