case_images: PMC11830418_01
case_images: Initial radiological Imaging.. Standard anteroposterior (A) and lateral (B) views with no pathological findings.
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case_images: FIG1
case_images: Six weeks later, an anteroposterior and lateral X-ray of the elbow revealed no pathologic findings (Figure 1).
case_images: Two sequential sagittal images on first MRI. . (A and B) Diffuse bone marrow oedema of distal humerus two months after the onset of symptoms.
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case_images: FIG2
case_images: After two months, the symptoms were milder but still existed; the patient had intermittent sports activity, and an MRI scan was performed (Figure 2).
case_images: Second MRI.. Sagittal (A) and coronal (B) views on persistent bone marrow oedema (arrows) three months after the first MRI and after conservative treatment.
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case_images: FIG3
case_images: A second MRI five months after the onset revealed no radiological improvement, with the bone oedema of the olecranon being the main finding observed (Figure 3).
case_images: CT Scans of Elbow. Sagittal (A), coronal (B), and axial (C) views of osteoid nidus located at olecranon tip (arrows) shown in elbow CT images ten months after onset of symptoms.
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case_images: FIG4
case_images: The diagnosis of osteoid osteoma was clearly confirmed by a subsequent CT scan (Figure 4).
case_images: Intra-operative Images..  (A-D) Osteoid osteoma location and excision under fluoroscopy (arrows).
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case_images: FIG5
case_images: The tip of the olecranon process was removed in the negative margin under C-arm guidance with the use of an osteotome (Figure 5).