Table 1.

Clinical characteristics of patients with NFPAs

Clinical data	NFPAs (n = 43)	Null cell adenomas (n = 23)	Oncocytomas (n = 20)	p value
Age (yr)	51.54 ± 10.50	50.95 ± 11.31	51.85 ± 9.89	0.786
Invasion	53.54 ± 9.38	54.09 ± 8.62	53.10 ± 8.40	0.132
Non-invasion	48.63± 11.56	49.11 ± 11.14	50.60 ± 11.51
Gender (M/F)	25/19	7/16	17/3	0.0003
Headache	39.5 %	43.5 %	35 %	0.571
Visual deficits	44.2 %	39.1 %	50 %	0.474
Visual field defects	30.2 %	21.7 %	40 %	0.193
Ptosis	2.3 %	4.3 %	0	1.000
Abnormal prolactin	25.6 %	30.4 %	20 %	0.252
Hypothyroidism	44.2 %	34.8 %	50 %	0.738
Hypogonadism	46.5 %	39.1 %	60 %	0.105
Cystic change	27.9 %	30.4 %	25 %	0.692
Invasive tumors	55.8 %	60.9 %	50 %	0.474
Hardy grade IV	30.2 %	39.1 %	20 %	0.457
Suprasellar C grade	34.9 %	26.1 %	45 %	0.113
Knosp grade IV	27.9 %	34.8 %	20 %	0.035
Anterior skullbase invasion	9.3 %	8.7 %	10 %	0.883
Clivus invasion	16.3 %	21.7 %	10 %	0.298
Brainstem invasion	9.3 %	4.3 %	15 %	0.230
Sphenoid sinus invasion	34.9 %	43.5 %	25 %	0.205
Recurrence	16.2 %	13 %	20 %	0.538