Figure 4.
When neuroimaging gliomas, ‘daughter’ lesions should be counted as part of the parent malignancy. (A) An MRI scan of a 69-year-old male with recurrent glioblastoma. Arrows show two areas of enhancement that might be considered separate lesions. (B) The same patient on repeat imaging the next day. There is a faint suggestion of enhancement connecting the two affected areas (arrowheads). Due to the infiltrative nature of glioma these are the same lesion with different foci of enhancement. Had the small focus appeared on a follow-up scan, we would propose considering that this region represents growth of the parent lesion rather than a new focus that would lead to classification of the patient as having progressive disease.