Evaluation of Breast Lump with Hypercalcemia

Initial Breast Imaging Based on Age

The American College of Radiology recommends diagnostic mammography as the mandatory first imaging study for evaluating palpable breast masses in women ≥40 years, with a sensitivity for detecting malignancy ranging from 86-91% 1, 2
For women ≥40 years, obtain standard mediolateral oblique and craniocaudal views, plus magnification views to identify microcalcifications that may indicate ductal carcinoma in situ (DCIS) 3, 4
The American College of Radiology suggests following mammography with breast ultrasound, regardless of mammography findings, as ultrasound detects 93-100% of cancers occult on mammography and increases overall sensitivity when combined with mammography 2
The combined negative predictive value of mammography plus ultrasound exceeds 97%, but biopsy should not be delayed if clinical suspicion is high, regardless of imaging results 1, 5, 2

Documenting tumor size and exact location, axillary lymph node status, supraclavicular lymph node examination, nipple changes, and contralateral breast and axilla examination is crucial for management 4, 6, 7

The American College of Radiology recommends proceeding directly to image-guided core biopsy if imaging shows a correlate, as core biopsy provides superior sensitivity, specificity, and histological grading 6
If imaging is negative but the mass remains clinically suspicious, perform palpation-guided core biopsy immediately, as physical examination findings should never be overruled by negative imaging 1, 5, 7

The American College of Radiology advises against performing short-term imaging follow-up instead of biopsy when a palpable mass is present with hypercalcemia, as this combination demands immediate tissue diagnosis 1, 5
The American College of Radiology recommends against obtaining MRI, PET, or molecular breast imaging as initial breast evaluation, as these are not supported by evidence for palpable mass workup 1, 5, 7
Biopsy should not be performed before imaging, as biopsy-related changes confuse subsequent image interpretation 7, 6