Table 1 Definite indications for breast ultrasound

Palpable lump

Axillary adenopathy

First approach for clinical breast abnormalities under age 40

First approach for clinical breast abnormalities in pregnant or lactating women

Suspicious abnormalities at mammography or magnetic resonance imaging (MRI)

Suspicious nipple discharge

Recent nipple inversion

Skin retraction

Breast inflammation

Abnormalities at the surgical scar after breast conserving surgery or mastectomy

Abnormalities in the presence of breast implants

Screening high-risk women, especially when MRI is not performed

Loco-regional staging of a known breast cancer, when MRI is not performed

Guidance for percutaneous breast interventions (needle biopsy, pre-surgical localisation, fluid collection drainage)

Monitoring patients with breast cancer receiving neo-adjuvant therapy, when MRI is not performed)