Table 4.

Characteristics of oral squamous cell carcinomas developed from oral leukoplakias

Case	Age	Gender	Location of OSCC	TNM	Recurrence after treatment
1	66	Female	Buccal mucosa	T2N3bM0	Yes
2	74	Female	Gingiva	T1N0M0	Yes
3	60	Male	Tongue	T2N0M0	Yes
4	43	Male	Tongue	T2N0M0	Yes
5	80	Male	Gingiva	T2N3bM0	Yes
6	78	Female	Gingiva	T3N0M0	Yes
7	73	Male	Tongue	T1N0M0	Yes
8	78	Female	Gingiva	T1N0M0	Yes
9	59	Male	Gingiva	T1N0M0	Yes
10	67	Male	Floor of mouth	T1M0N0	No
11	27	Male	Tongue	TisN0M0	Yes
12	85	Female	Tongue	T2N2aM0	Yes
13	64	Female	Tongue	T1N0M0	Yes
14	62	Male	Tongue	T1N0M0	No
15	74	Female	Tongue	T1N0M0	Yes
16	79	Female	Tongue	T2N0M0	Yes
17	45	Male	Buccal mucosa	T1N0M0	No
18	66	Female	Tongue	T1N0M0	No
19	63	Male	Lower lip	TisN0M0	No
20	48	Female	Tongue	T1N0M0	No
21	53	Male	Tongue	T1N0M0	No
22	72	Female	Tongue	T2N0M0	Yes
23	76	Female	Tongue	T2N1M0	No
24	59	Female	Gingiva	T4aN0M0	Yes
25	89	Female	Tongue	T1N0M0	No
26	72	Male	Tongue	T2N0M0	Yes

OSCC, oral squamous cell carcinoma; TNM, TNM Classification of Malignant Tumours