Lentigo maligna is a type of melanoma (FA2020 p484), hence why it is important the lesion is brown/black with irregular borders and enlarging (all hallmarks of melanoma). The biopsy description also fits lentigo maligna, but even if you are not a pathologist the description that fits cancer and and "atypical melanocytes" should point you to lentigo maligna.
Acanthosis nigricans is thickening (acanthosis means epidermal hyperplasia) and darkening of skin in folds and creases associated with insulin resistance
Actinic keratosis is a premalignant lesion that is a small, rough, erethematous or brownish papule/plaque
Compound nevus is a type of mole that is slightly elevated, brown or light brown, and has regular borders. It is not fast-growing.
Sebhorreic keratosis are "stuck-on" flat, greasy, pigmented squamous epithelial proliferation of immature keratinocytes with keratin-filled cysts. Rapid onset of multiple indicates possible GI malignancy.
submitted by โcassdawg(1780)
Lentigo maligna is a type of melanoma (FA2020 p484), hence why it is important the lesion is brown/black with irregular borders and enlarging (all hallmarks of melanoma). The biopsy description also fits lentigo maligna, but even if you are not a pathologist the description that fits cancer and and "atypical melanocytes" should point you to lentigo maligna.
FA2020 p482, 477 and 484