Table 1: Samples distribution. Each group consisted of thirty specimens.

Group 1 (non neoplastic, non inflammatory)	Group 2 (non neoplastic, inflammatory)	Group3 (neoplastic, non inflammatory)	Group 4 (neoplastic, inflammatory)
Fibrosis	Fibrosis	Fibrosis	Fibrosis
Minor presence of elastic fibers	Minor presence of elastic fibers	Minor presence of elastic fibers	Increased elastic fibers
Relative absence of myofibroblasts	Relative absence of myofibroblasts	Relative absence of myofibroblasts	Significantly higher numbers of myofibroblasts (p = 0.023)