Fig. 22.1 a Digital mammography, CC view.

Fig. 22.1 b Digital mammography, MLO view.

Clinical Findings

Normal.

Ultrasound

No pathological findings (not shown).

Fig. 22.2a Magnification view (CC).

Fig. 22.2 b Zoomed view of the magnification view.

Fig. 22.3a–c Contrast-enhanced MRI of the breasts.

Fig. 22.4 Contrast-enhanced MR mammography. Maximum intensity projection.

Fig. 22.5a,b Signal-to-time curve of the Y-shaped enhancement.

Ultrasound

Sonography showed multiple cysts (maximum diameter 5 mm) in both breasts, and otherwise normal echo patterns. There were no suspicious findings in the central part of the left breast or elsewhere. US BI-RADS right 2/left 2.

Mammography

Imaging showed fibroglandular parenchyma, ACR type 2. There were polymorphous microcalcifications (round and linear, no V-or Y-shaped particles) in the central part of the left breast in a linear or segmental orientation. Mammograms showed no masses or densities and no architectural distortions. BI-RADS right l[no figure]/left 4. PGMI is defined only for bilateral mammography.

MR Mammography

Fig. 22.6 Y-shaped enhancement in the left breast.

Preliminary Diagnosis

DCIS.

Differential Diagnosis

Papilloma, adenosis, ductal hyperplasia, focal mastitis.

Fig. 22.7 Radiogram of some of the specimens.