Archives of the AFIP -- RadioGraphics

Figure Legend | Panel A | Panel B | Panel C | Panel D

Figure 6: Arteriovenous hemangioma of the tibia in a 25-year-old man with shin pain. Panel A Lateral radiograph reveals an intracortical lesion in the midshaft of the anterior tibia with vertical striated and circular radiolucent areas (arrows). Panel B CT scan shows the vascular nature of the channels seen in A, with some seen longitudinally (arrowhead) and others en face (arrows). (C and D) Sagittal contrast material enhanced T1-weighted MR image Panel C and axial T2-weighted MR image Panel D show high-signal-intensity vascular channels (arrows), seen longitudinally in C and en face in D. The high signal intensity in C represents contrast enhancement, because it was not evident in the unenhanced T1-weighted image (not shown). The predominance of channels is consistent with the appearance of an arteriovenous lesion, as opposed to the larger spaces found in a cavernous hemangioma. The high signal intensity in D is from a lesion with relatively slow flow.

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