Medicine
Perineural Invasion as a Prognostic Indicator in Squamous Cell Carcinoma
Quick fact
Perineural invasion in squamous cell carcinoma is an independent predictor of local recurrence, nodal metastasis, and reduced disease-specific survival, even after controlling for tumor size and depth.
Why this is interesting
A skin cancer that looks small and removable can still be deadly if it has silently spread along a nerve. What hidden sign reveals this aggressive potential?