showed a trendp = 0.075
Histopathological aggressiveness features—perineural invasion (PNI; 73.0% in the entire cohort) and vascular invasion (VI; 62.6%)—were relatively evenly distributed, although PNI showed a trend toward a higher incidence in PB (81.8% vs. 63.5% in the PN; p = 0.075), which, however, did not reach significance after adjustment.