Lentiginous melanoma - DermNet Lentiginous melanoma is a proliferation of malignant pigment cells (melanocytes) along the basal layer of the epidermis The precursor lesion is an atypical solar lentigo or a lentiginous junctional naevus
Acral lentiginous melanoma - DermNet Acral lentiginous melanoma is a rare subtype of melanoma that appears on the palms, soles, or under the nails It can arise in normal-appearing skin, or more rarely it can develop within an existing melanocytic naevus (mole)
Lentigo: Causes, Features, and Treatment — DermNet A lentigo is a clearly defined, pigmented macule that results from sun exposure Unlike a freckle, it does not fade over time Images below demonstrate the various possible forms
Lentigo maligna and lentigo maligna melanoma - DermNet What is lentigo maligna? Lentigo maligna is a precursor to lentigo maligna melanoma, a potentially serious form of skin cancer Lentigo maligna is also known as Hutchinson melanotic freckle Lentigo maligna is an early form of melanoma in which the malignant cells are confined to the tissue of origin, the epidermis, hence it is often reported as ‘in situ’ melanoma It occurs in sun damaged
Lentigo pathology - DermNet A lentiginous naevus (also called naevoid lentigo or ‘jentigo’) has few junctional nests and lentiginous melanocytic hyperplasia at the periphery (figure 6) A continuum may exist whereby lentigo simplex can evolve to form junctional then compound and finally intradermal naevi
Acral lentiginous melanoma dermoscopy What is acral lentiginous melanoma? Acral lentiginous melanoma is a type of melanoma arising on the palms of the hands, soles of the feet, or the underside of fingers or toes What are the clinical features of acral lentiginous melanoma? Acral lentiginous melanoma starts as a slowly enlarging flat patch of discoloured skin
Moles (melanocytic naevi, pigmented nevi) - DermNet What is a melanocytic naevus? A melanocytic naevus (American spelling ‘nevus’), or mole, is a common benign skin lesion due to a local proliferation of pigment cells (melanocytes) It is sometimes called a naevocytic naevus or just 'naevus' (but note that there are other types of naevi) A brown or black melanocytic naevus contains the pigment melanin, so may also be called a pigmented
Acral Lentiginous Melanoma Images — DermNet View pictures of acral lentiginous melanoma in the gallery below This rare subtype of melanoma can appear on the palms, soles, or under the nails It can arise in normal-appearing skin, or more rarely it can develop within an existing melanocytic naevus (mole)
Common skin lesions. Benign melanocytic lesions - DermNet Created 2008 Learning objectives Describe and name common benign melanocytic lesions (moles and freckles) Introduction In the embryo, melanocytes are derived from stem cells in the neural crest that normally migrate to the epidermis, where they are scattered along the basal layer Melanocytes produce melanin within cytoplasmic packets called melanosomes These contain greater amounts of