表 1. Pathological diagnoses and general clinical data of thyroid local invasion cases (n=72) .

甲状腺局部侵袭病例病理诊断及一般资料（n=72）

Pathological diagnosis	Primary site	Case	Male∶female	Average age/yr., mean (range)
Squamous cell carcinomas	Larynx	45	21.5∶1	58 (36-82)
	Laryngopharynx	10	10∶0	53 (39-66)
	Thymus	4	1∶1	58 (39-78)
	Esophagus	4	4∶0	60 (46-74)
	Trachea	2	2∶0	56 (45-70)
Adenoid cystic carcinomas	Trachea	3	0∶3	41 (21-71)
	Submandibular gland	1	0∶1	42
Neuroendocrine carcinoma	Esophagus	1	1∶0	54
Giant cell tumor	Thyroid cartilage	1	1∶0	40
Type B3 thymoma	Thymus	1	1∶0	44
Total		72	8∶1	56 (21-82)