Reproducibility of Aberrant Lymphatic Drainage in a Melanoma Patient with Clinical History of Previous Axillary Lymph Node Dissection from a Breast Cancer: A Case Report

The reproducibility of pre-surgical lymphoscintigraphy for sentinel node mapping in melanoma is high and aberrant drainages may be predicted, especially when there are factors that alter migration of the radiopharmaceutical. A 47 year-old patient with a clinic history of Li-Fraumeni syndrome, presence of multiple tumors and a previous right axillary lymph node dissection from a breast cancer was admitted in our centre. She presented a melanoma in her right flank and underwent a pre-operative lymphoscintigraphy in order to know the real lymphatic drainage. Lymphatic drainage was aberrant, with no drainage to right axilla not right groin. Keeping in mind these results, a surgery was planned and a second lymphoscintigraphy was performed showing a good concordance with the first one.