Fig 4.

Smallest ISCM visible on PET, not clinically reported. A 54-year-old woman (patient 9 from On-line Table 1) with non–small cell lung cancer underwent PET 1 day before MR imaging. A, Postcontrast sagittal T1WI; B, sagittal PET only image; C, sagittal, and D, axial PET/CT fused images. A small, 7-mm cervical ISCM (arrows) was not described on the original clinical PET report. The location of the FDG avid ISCM in the upper cervical cord (C3–4) corresponds to the lesion location on MR imaging (C3) (arrows). The SUVmax was 3.3 (1.9 × that of blood pool).