Altered Lymphatic Drainage in Malignant Melanoma after previous Sentinel Node Biopsy in the Same Nodal Drainage Basin

We would like to present the case of a melanoma patient with altered sentinel lymph node drainage on repeat sentinel lymph node biopsy (SNB) subsequent to previous breast cancer. A 53-year-old lady underwent a wide local excision (WLE) of a melanoma scar from her right breast with lymphoscintigraphy. She had a completely excised superficial spreading malignant melanoma (SSMM) of Breslow thickness (BT) 3.7mm with ulceration. She had a history of right breast carcinoma diagnosed in 2009, treated with lumpectomy and radiotherapy, and had undergone a previous negative sentinel lymph node biopsy of the right axilla.

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