Fig. 8
From: Radiolucent lesions of the mandible: a pattern-based approach to diagnosis
Histologically proven eosinophilic granuloma. a OPT-like curved thick slab reconstruction, b axial CT bone window and (c) 3D reconstruction from CT data set show a well-defined radiolucent lesion (arrows) located in the angle of the mandible. Sharply delineated slightly sclerotic borders. Periosteal reaction (dashed arrow). d PET/CT showing that high FDG uptake within the posterior mandible and perimandibular soft tissues (arrow). SUVmean = 6, SUVmax = 9. e Axial T2 and f sagittal T1 after intravenous gadolinium show a large extraosseous component (arrows) with invasion of the masseter muscle. Close vicinity to the submandibulat gland. Note high signal intensity on T2 and strong enhancement after gadolinium. g Fused T2 and b 1,000 showing restricted diffusion. h ADC map showing a moderately low ADC value (ADC = 1.21 × 10−3 mm2/s, arrow) within the lesion. Note inflammatory oedema around the lesion with high ADC values (asterisk)