https://www.selleckchem.com/pr....oducts/nsc-663284.ht
Perineural invasion (PNI) and lymphovascular invasion (LVI) may be adverse prognostic indicators in squamous cell carcinoma (SCC) of the tongue. The percentages of histological PNI and LVI were determined in 335 patients with tongue SCC. Sixty tumours originally reported as negative for these features were tested to determine how many more were positive with "immunohistochemical enhancement." PNI was found in 141 (42.1%) and LVI in 51 (15.2%) patients. 79.4% of the 141 patients who had PNI and 72.6% of the 51 with LVI had a T3 or T4
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