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< CNMD \ <Tutorial \<Second step \ Pattern Analysis\<Back\Next>
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Special location: Facial melanocytic lesions
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Lentigo Maligna (melanoma in situ on severely sun-damaged skin)
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Few or no classic dermoscopic criteria of malignancy Atypical pseudonetwork typified by different morphologic aspects according to the melanoma progression:
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Annular-granular structures
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Multiple blue-gray dots surrounding the follicular ostia with an annular-granular appearance
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Gray pigment pseudonetwork
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Gray pigmentation surrounding the follicular ostia, formed by the confluence of annular-granular structures
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Rhomboidal structures
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Gray-brown pigmentation surrounding the follicular ostia with a rhomboidal appearance
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Asymmetric pigmented follicles
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Eccentric annular pigmentation around follicular openings (Criteria modified according to Schiffner et al. J Am Acad Dermatol 2000)
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Rhomboidal structures (green arrow), annular-granular structures (black arrows), and asymmetric pigmented follicles (circle) in a lentigo maligna
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Gray pseudonetwork in a lentigo maligna
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