Table 2: Clinical characteristics and presentations of patients with PDM.

CharacteristicValue

Mean size of mass (cm)
Affected sides
 Right34 (39.08)
 Left45 (51.72)
 Bilateral8 (9.20)
Quadrant(s)
 Upper-outer20 (22.99)
 Lower-outer8 (9.20)
 Upper-inner9 (10.34)
 Lower-inner9 (10.34)
 Two or more quadrants15 (17.24)
 Subareolar region26 (29.89)
Clinical presentation
 Mass without pain63 (72.41)
 Mass with pain15 (17.24)
 Erythroswelling31 (35.63)
 Nipple discharge6 (6.90)
 Sinus12 (13.79)
 Nipple retraction24 (27.59)
Biopsy methods
 Incisional or excisional biopsy24 (27.59)
 Vacuum-assisted biopsy63 (72.41)

Note. Data are number (%) of patients, unless otherwise indicated.