Table 1. Clinical manifestations of PD of the nipple (n=76) and NA (n=23).

Variables	Nipple PD (n=76)	NA (n=23)	t/χ2	P
Age	21–76 years; mean 52 years	22–63 year; mean 41 years	−3.687	0.000
Course of disease	6 months to 3 years; mean 9 months	3 months to 10 years; mean 2.5 years	4.471	0.000
Nipple erosion and discharge	57 (75%)	19 (82.6%)	0.573	0.326
Palpable mass	19 (25%); possible in every quadrant	14 (60.9%); all located inside the nipple	10.223	0.002
Pain or itching	12 (15.8%)	2 (8.7%)	0.732	0.392

PD, Paget’s disease; NA, nipple adenoma.