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Figure 1: The pool sign-T2 coronal (a) and axial (b) MR images showing hyperintensities encircling the lesion (arrows) brighter than the surrounding edema, T1 post contrast image (c) showing peripheral enhancement. The lesion shows restriced diffusion in DWI (d) and ADC (e) images. CT chest (f) with the left solitary lung lesion (arrow) histopathologically proven as adenocarcinoma

Figure 1: The pool sign-T2 coronal (a) and axial (b) MR images showing hyperintensities encircling the lesion (arrows) brighter than the surrounding edema, T1 post contrast image (c) showing peripheral enhancement. The lesion shows restriced diffusion in DWI (d) and ADC (e) images. CT chest (f) with the left solitary lung lesion (arrow) histopathologically proven as adenocarcinoma