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Special location: Acral melanocytic lesions |
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Absence of pigment network
Parallel pattern typified by different morphologic aspects. Criteria modified according to Saida et al. (Arch Dermatol 1995) and Oguchi et al. (Arch Dermatol 1998):
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Parallel-furrow pattern |
Pigmentation following the sulci superficiales. The most common dermoscopic pattern in acral melanocytic nevi
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Lattice-like pattern |
Pigmentation following and crossing the furrows in acral melanocytic nevi
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Fibrillar pattern |
Numerous, finely pigmented filaments perpendicular to the furrows in acral melanocytic nevi
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Parallel-ridge pattern |
Pigmentation aligned along the cristae superficiales. Commonly found in melanoma in situ and in early invasive melanomas of palms and soles
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Parallel-furrow pattern in an acral nevus |
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Lattice-like pattern in an acral nevus |
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Fibrillar pattern in an acral nevus |
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Parallel-ridge pattern in a melanoma in situ |
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