Table 2.

Synchronous superficial head and neck squamous cell carcinoma lesions n (%)

	Group A (n = 254)	Group B (n = 307)	P value
Synchronous HNSCC
No. of patients	1 (0.3)	12 (3.9)	0.008
No. of lesions	1	14	0.010
Location of cancer
Oropharynx	0	5
Hypopharynx	1	8
Larynx	0	1
Treatment for synchronous HNSCC
ER or surgical local resection	0	7 (58)
TPLE	0	1 (8)
Radiation and/or chemotherapy	1 (100)	0
No treatment	0	4 (33)
Death due to synchronous HNSCC	0	0

ER: Endoscopic resection; TPLE: Total pharyngo-laryngo-esophagectomy; HNSCC: Head and neck squamous cell carcinoma.