Fig. 4

Distribution of semiquantitative spinal cord LRP in caudo-rostral versus amygdala-based LRP types. Includes all cases with spinal cord regions available that were categorised into caudo-rostral and amygdala-based LRP types in previously published work [31], with olfactory-only cases [19] n = 15, excluded from analysis. The frequency of spinal cord LRP was higher in subjects with the caudo-rostral LRP type, compared to those with the amygdala-based LRP type in all anatomical regions (Fisher’s exact test uncorrected p < 0.01, Bonferroni corrected p < 0.09) (Additional file 1: Table S6). The sacral dorsal horn and thoracic IML showed the most significant p-values after Bonferroni correction ((p = 0.000216 and p = 0.000027, respectively)