Epidemiological Profile of Salivary Gland Tumors in Southern Iranian Population: A Retrospective Study of 405 Cases

Table 5

Distribution of benign and malignant SGTs in different age groups (intervals of 20 years).

		Age range	Mean age	Age groups (years)					Total
				0-20	20-40	40-60	60-80	>80		%^b
				(%)^a
Benign tumors	Pleomorphic adenoma	7-74	40.5	14(6.5%)	103(48.3%)	68(31.9%)	28(13.1%)	0(0%)	213	52.5
	Warthin’s tumor	29-81	59.2	0(0%)	2(3%)	29(44.6%)	32(49.2%)	2(3%)	65	16
	Basal cell adenoma	33-70	54.1	0(0%)	1(6.6%)	8(53.3%)	6(40%)	0(0%)	15	3.7
	Myoepithelioma	16-56	40	1(25%)	0(0%)	3(75%)	0(0%)	0(0%)	4	0.9
	Oncocytoma	70-74	71.6	0(0%)	0(0%)	0(0%)	3(100%)	0(0%)	3	0.7
	Monomorphic adenoma	48-83	65.5	0(0%)	0(0%)	1(50%)	0(0%)	1(50%)	2	0.4
Malignant tumors	Mucoepidermoid carcinoma	22-95	52.6	0(0%)	6(22.2%)	11(40.7%)	7(25.9%)	3(11.1%)	27	6.6
	Adenoid cystic carcinoma	25-72	49.8	0(0%)	7(30.4%)	8(34.7%)	8(34.7%)	0(0%)	23	5.6
	Acinar cell carcinoma	18-67	39.1	1(7.1%)	6(42.8%)	6(42.8%)	1(7.1%)	0(0%)	14	3.4
	Salivary duct carcinoma	45-78	62.2	0(0%)	0(0%)	2(25%)	6(75%)	0(0%)	8	1.9
	Lymphoma	11-74	58.3	1(16.6%)	0(0%)	1(16.6%)	4(66.6%)	0(0%)	6	1.5
	Malignant mixed tumor	50-81	63.4	0(0%)	0(0%)	2(40%)	2(40%)	1(20%)	5	1.2
	Carcinoma ex pleomorphic adenoma	31-67	52.5	0(0%)	1(25%)	2(50%)	1(25%)	0(0%)	4	0.9
	Basal cell adenocarcinoma	53-62	57.6	0(0%)	0(0%)	2(66.6%)	1(33.3%)	0(0%)	3	0.7
	Poorly differentiated carcinoma	27-76	52	0(0%)	1(33.3%)	1(33.3%)	1(33.3%)	0(0%)	3	0.7
	Epithelial myoepithelial carcinoma	36-82	60.6	0(0%)	1(33.3%)	0(0%)	1(33.3%)	1(33.3%)	3	0.7
	Hyalinizing clear cell carcinoma	36-36	36	0(0%)	1(100%)	0(0%)	0(0%)	0(0%)	1	0.2
	Oncocytic carcinoma	67-67	67	0(0%)	0(0%)	0(0%)	1(100%)	0(0%)	1	0.2
	Papillary carcinoma	58-58	58	0(0%)	0(0%)	1(100%)	0(0%)	0(0%)	1	0.2
	Papillary adenocarcinoma	58-59	59	0(0%)	0(0%)	1(100%)	0(0%)	0(0%)	1	0.2
	Adenocarcinoma	47-47	47	0(0%)	0(0%)	1(100%)	0(0%)	0(0%)	1	0.2
	Small cell neuroendocrine carcinoma	77-77	77	0(0%)	0(0%)	0(0%)	1(100%)	0(0%)	1	0.2
	Adenosquamous cell carcinoma	43-43	43	0(0%)	0(0%)	1(100%)	0(0%)	0(0%)	1	0.2

^aPercentage in relation with the histopathologic group. ^bPercentage in relation with total number of cases.