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  • Title: The role of sentinel node biopsy in the management of melanocytic lesions of uncertain malignant potential (MUMP).
    Author: McArthur GJ, Banwell ME, Cook MG, Powell BW.
    Journal: J Plast Reconstr Aesthet Surg; 2007; 60(8):952-4. PubMed ID: 17616368.
    Abstract:
    Melanocytic lesions of uncertain malignant potential (MUMP) is a term which is useful in identifying melanocytic tumours where the distinction between benign and malignant is a histological problem. Sentinel node biopsy is recognised to provide unmatched prognostic information in melanoma patients, but has recently been advocated for diagnostic purposes in MUMP. We present the case of a seven-year-old girl who presented with a six-month history of a changing pigmented lesion on her left upper arm. Excision biopsy not only showed a melanocytic lesion with some spitzoid features but also marked atypia making it appropriate to use the term MUMP. Sentinel node biopsy was undertaken. This case demonstrates that sentinel node biopsy can be performed safely in children. Given the low morbidity of the procedure we advocate that this technique should be considered in this difficult diagnostic situation to further the management of these patients.
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