Table 3.

The number and frequencies of patients with one, two or three positivities of serum tumor markers including carcinoembryonic antigen (CEA ≥ 3 ng/mL), squamous cell carcinoma antigen (SCC–Ag ≥ 2 ng/mL), and ferritin (≥250 ng/mL) in 41 patients with oral submucous fibrosis (OSF).

Positivity for serum tumor marker	Patient number (%)
	OSF patients (n = 41)
CEA + SCC-Ag + ferritin	2 (4.9)
CEA + SCC-Ag	2 (4.9)
CEA + ferritin	5 (12.2)
SCC-Ag + ferritin	0 (0.0)
CEA only	7 (17.1)
SCC-Ag only	4 (9.8)
Ferritin only	15 (36.6)
none	6 (14.6)