Table 1.
Patient Characteristics and Clonal Relationship of Primary Tumor and Second Primary Tumor
| Patient | Sex | Lesion | Date | Site* | pTN | Clonality† |
|---|---|---|---|---|---|---|
| 1 | F | t1 | 7/97 | R retromolar trigone | T2N2b | Clonal |
| t2 | 12/97 | Anterior floor of mouth | T1N0 | |||
| 2 | M | t1 | 2/97 | L retromolar trigone | T2N0 | Not clonal |
| t2 | 2/97 | R mobile tongue | T2N0 | |||
| t3 | 4/98 | Uvula | T1N0 | |||
| 3 | M | t1 | 7/94 | L-lateral border of tongue | T2N0 | Clonal |
| t2 | 3/99 | L retromolar trigone | T1N0 | |||
| 4 | F | t1 | 5/99 | L base of tongue | T2N1 | Not clonal |
| t2 | 5/99 | R anterior tonsillar pillar | T1N0 | |||
| 5 | M | t1 | 11/92 | R lower alveolus | T4N1 | Clonal |
| t2 | 12/98 | R upper alveolus | T2N0 | |||
| 6 | M | t1 | 3/93 | R lower alveolus | T3N2b | Not clonal |
| t2 | 5/98 | R retromolar trigone | T2N0 | |||
| 7 | M | t1 | 11/00 | L retromolar trigone | T2N0 | Clonal |
| t2 | 11/00 | Anterior floor of mouth | T2N1 | |||
| 8 | M | t1 | 10/91 | L-lateral border of tongue | T1N0 | Clonal |
| t2 | 9/95 | Anterior floor of mouth | T1N0 | |||
| 9 | F | t1 | 3/95 | R buccal mucosa | T2N0 | Clonal |
| t2 | 4/96 | Soft palate | T2N0 | |||
| 10 | M | t1 | 2/88 | Anterior floor of mouth | T3N1 | Not clonal |
| t2 | 8/95 | L retromolar trigone | T4N0 | |||
| t3 | 8/95 | Uvula | T1N0 |
*L, left; R, right.
†Clonal relationship of the primary tumor and second primary tumor revealed by molecular analysis. All tumors that were clonally related originated from a single precursor lesion.