PMC4862289_01
Axial (a) and sagittal (b) T1-weighted magnetic resonance imaging scans revealed a heterogeneous osteolytic mass in the right parietal region. The lesion intensely enhanced after contrast administration in the axial (c) and sagittal (d) T1-weighted magnetic resonance imaging scans
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F1
No other lesions were noted, and no intracranial abnormality was detected [Figure 1].
Selected axial sections (a-c) of cranial computed tomography scans demonstrating the skull defect with associated large subgaleal and extradural hematoma
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F2
Photomicrograph showing polymorphic infiltrate of Langerhans histiocytes (polygonal cells with kidney-shaped and elongated nuclei had longitudinal groove) admixed with many eosinophils
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F3
The neoplastic histiocytes showed kidney-shaped and elongated nuclei with a longitudinal groove (coffee beans like), consistent with Langerhans histiocytes [Figure 3].
Six-year follow computed tomography scan without (a) and with contrast (b) demonstrating no recurrence and spontaneous bone formation and closure of the skull defect
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F4
CT scan at 6-year follow-up showed no recurrence of the lesion and spontaneous bone formation and closure of previous skull defect complete resolution of the [Figure 4].