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case_images: Anteroposterior and lateral radiographs showing a defined osteolytic lesion in the tibial diaphysis with mild bulging on the posterolateral side.
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case_images: Plain radiographs did not show any evidence of periosteal reaction or cortical destruction (Fig. 1), however, confinement of the lesion to the cortex could not be confirmed.
case_images: Axial CT image demonstrating an osteolytic lesion in the lateral tibial cortex which did not involve the medullary cavity. CT, computed tomography.
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case_images: The measurements were 90 mm in length and 20x10 mm in maximum diameter (Fig. 2).
case_images: (A) Coronal T1-weighted MRI image revealing low-signal intensity in the central portion and high-signal intensity in the peripheral portion. (B) Coronal T2-weighted MRI image exhibiting high-signal intensity in the central and peripheral portions. MRI, magnetic resonance imaging.
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case_images: T1-weighted MRI and high-signal intensity on T2-weighted MRI, and a peripheral portion with high-signal intensity on T1-weighted and T2-weighted MRI (Fig. 3). Technetium-99m scintigraphic scanning revealed increased isotope uptake at the lesion site.
case_images: Intraoperative view of the intracortical lipoma. Following curettage, the true cortex was observed to be located beneath the lesion.
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case_images: Curettage was performed and the true cortex was located beneath the lesion (Fig. 4).
case_images: Histological appearance of an intracortical lipoma. Mature adipocytes and trabecular bone are shown (H&E stain; original magnification, x200).
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case_images: No cellular atypia, fat necrosis or calcifications were observed (Fig. 5).