case_images: PMC11111296_01
case_images: Imaging manifestations of myelolipoma. (a) X-ray showed a pathological fracture of the left femoral shaft. (b) CT showed the disappearance of bone trabeculae at the tumor and thin cortex. (c) MRI showed thinning of the bone cortex in the middle and lower segments of the left femur and patchy low signal shadow in the medullary cavity.
case_images: CRIONM2024-5838618.001.jpg
case_images: PMC11111296_01_CRIONM2024-5838618.001.jpg
case_images: fig1
case_images: The x-ray film showed a cystic space-occupying lesion in the middle and lower segments of the left femur, accompanied by a pathological fracture (Figure 1(a)). No trabecular bone was found (Figure 1(b)). The signal in the medullary cavity was uneven on the MRI, and flake-like low signal shadows of various sequences were seen in the cavity (Figure 1(c)).
case_images: Pathology of myelolipoma. (a) Massive infiltration of acute and chronic inflammatory cells (40x). (b) Adipose tissue and bone marrow tissue can be seen in the tumor (100x).
case_images: CRIONM2024-5838618.002.jpg
case_images: PMC11111296_01_CRIONM2024-5838618.002.jpg
case_images: fig2
case_images: Pathological sections showed that there was a massive infiltration of acute and chronic inflammatory cells in the tumor (Figure 2(a)). Hematopoietic cells were distributed among adipose tissue, including granulocytes, erythrocytes, and megakaryocytes, and the morphology and proportion of these cells were normal (Figure 2(b)).
case_images: Postoperative x-ray and follow-up. (a) Initial postoperative day, featuring a multiplanar external frame for stabilization. (b) One-week postsurgery, where a secure external fixation is present without any displacement at the fracture site. (c, d) A 2-year follow-up period after surgery, indicating no recurrence.
case_images: CRIONM2024-5838618.003.jpg
case_images: PMC11111296_01_CRIONM2024-5838618.003.jpg
case_images: fig3
case_images: Therefore, the fracture was fixed with a hybrid external fixation (Figure 3(a)). After regular review, the fracture site was stable without obvious displacement (Figures 3(a) and 3(b)). As of June 2021, there was no recurrence (Figures 3(a) and 3(d)).