Case 100: Sentinel nodes
A 45 year old woman presents with a 4 cm mammographic abnormality in her left breast. There are no nodes palpable in the axilla. A core biopsy of the breast lesion confirms ductal carcinoma in situ. She has opted for mastectomy but would like a sentinel lymph node biopsy in preference to axillary dissection. Her lymphoscintigram is shown below.