Langerhans cell histiocytosis presenting as an isolated brain tumour: A case report

Figure 3 ¹⁸F-fluorodeoxyglucose positron emission tomography/computed tomography. A: Maximum-intensity-projection show a focal ¹⁸F-fluorodeoxyglucose (¹⁸F-FDG) uptake lesion in the right maxillary sinus and multiple foci with ¹⁸F-FDG uptake in the bilateral lung field; B-G: Axial and coronal views of the selected positron emission tomography (PET), non-enhanced computed tomography (NE-CT), and fused PET/CT images show the left frontal lesion with ¹⁸F-FDG uptake (SUVmax 9.5, arrowheads); H-J: Axial views of the selected PET, NE-CT, and fused PET/CT images show multiple cysts with peripheral exudation in the upper lobes of bilateral lungs, with slightly increased ¹⁸F-FDG uptake (SUVmax 3.2). MIP: Maximum-intensity-projection; PET: Positron emission tomography; CT: Computed tomography.