Melanoma, Lentigo Maligna Type



Melanoma, Lentigo Maligna Type


Soheil Sam Dadras, MD, PhD

Nicole Carreau










Clinical photograph of lentigo maligna melanoma on the nose of an elderly patient shows irregular pigmentation image. Both in situ and invasive melanoma were present on biopsy. (Courtesy P. Hsu, MD.)






LMM shows epidermal atrophy, consumed rete ridges, and an atypical junctional melanocytic lesion image. The papillary dermis is obscured by a dense lymphocytic infiltrate, but focal invasion is present image.


TERMINOLOGY


Abbreviations



  • Lentigo maligna melanoma (LMM)


Synonyms



  • Invasive melanoma, lentigo maligna type


  • Hutchinson freckle (clinical term, which typically refers to melanoma in situ, lentigo maligna type)


Definitions



  • Indolent melanoma subtype that evolves slowly and usually presents on head and neck (sun-exposed regions) in older patients

Jul 8, 2016 | Posted by in PATHOLOGY & LABORATORY MEDICINE | Comments Off on Melanoma, Lentigo Maligna Type
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