Quantification of radio-tracer uptake in axillary lymph nodes using breast specific gamma imaging (BSGI): benign radio-tracer extravasation versus uptake secondary to breast cancer.

To develop a means of quantifying axillary radio-tracer uptake in patients undergoing breast specific gamma imaging. This may help differentiate uptake secondary to extravasation of the radio-tracer at the injection from increased uptake as a result of breast cancer metastatic to lymph nodes. A retrospective analysis of patients who had undergone breast specific gamma imaging was performed.

Invasive lobular carcinoma: detection with mammography, sonography, MRI, and breast-specific gamma imaging.

Objective: The objective of our study was to compare the sensitivity of mammography, sonography, MRI, and breast-specific gamma imaging (BSGI) in the detection of invasive lobular carcinoma.

Materials And Methods: This is a retrospective multicenter study of women with biopsy-proven invasive lobular carcinoma. All patients had undergone mammography and BSGI, and the imaging findings were classified as positive or negative for invasive lobular carcinoma by experienced breast imagers.