Surgical Disparities of Parathyroid Carcinoma: Long-Term Outcomes and Deep Excavation Based on a Large Database

Table 1

Characteristics for patients with parathyroid carcinoma.

Covariate	Level	Number	%
Age at diagnosis	<45	131	22.1
	45–59	223	37.6
	60–69	128	21.6
	70–79	80	13.5
	>80	31	5.2
Year of diagnosis	1973–2004	303	51.1
	2004–2015	290	48.9
Sex	Female	294	49.6
	Male	299	50.4
Race	White	449	75.7
	Black	96	16.2
	Other	46	7.8
Extent of diseases	Local disease	208	35.1
	Regional disease	90	15.2
	Metastatic disease	7	1.2
	Unstaged	288	48.6
LN status	Negative	129	21.8
	Positive	15	2.5
	Not reported	449	75.7
Size of tumor (cm)	0–2.9	120	20.2
	>3	90	15.2
	Unknown	383	64.6
Grade	Well-differentiated	53	8.9
	Moderately differentiated	15	2.5
	Poorly differentiated	3	0.5
	Undifferentiated	2	0.3
	Unknown	520	87.7
Radiation	No	536	90.4
	Yes	57	9.6
Surgery	No	40	6.7
	Yes	553	93.3
Extent of resection	No definitive treatment	40	6.7
	Parathyroidectomy	384	64.8
	En bloc radical resection	38	6.4
	Debulking	5	0.8
Survival months (month)		83.00(34.00∼146.75)
CSS	Alive	536	90.4
	Death	57	9.6
OS	Alive	385	64.9
	Death	208	35.1