Imaging of perineural tumor spread in head and neck cancer
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2019, Radiotherapy and OncologyCitation Excerpt :On T1-weighted MRI, fat is generally present, and is normally hyperintense just after a nerve exits a foramen and in the pterygopalatine fossa. Obliteration of these fat pads is a key element in detecting macroscopic PNI [11,24]. Direct evidence of macroscopic PNI spread on MRI would be enlargement and enhancement along the course of a cranial nerve on post contrast T1-weighted images (Figs. 3, 4 and 5).
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