Dermoscopic Color Perspective

Weismann, K; Lorentzen, Henrik

doi:10.1001/archderm.142.9.1250

Cited by 32 publications

(21 citation statements)

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“…According to current understanding, collagen fibrils that are present in the dermis scatter light superficial to the deeper melanin pigment, and as blue light is scattered more than red light, the structure is seen by the dermatoscopist as gray or blue according to whether it is in the superficial or deep dermis, respectively. This is known as the Tyndall effect [3]. Given the associated structureless pattern, lichenoid keratosis should also be considered, however, this would not typically present as a nodule.…”

Section: Discussionmentioning

confidence: 99%

Pseudofolliculitis barbae: a dermatoscopic correlate

Ladizinski

Ramírez-Fort

Cohen³

et al. 2013

Dermatol Pract Concept

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Section: Discussionmentioning

confidence: 99%

Pseudofolliculitis barbae: a dermatoscopic correlate

Ladizinski

Ramírez-Fort

Cohen³

et al. 2013

Dermatol Pract Concept

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“…9 This can occur in melanomas due to freemelanin incontinence 3 and is shown in Fig. 1b and e, respectively, where the dermatoscopic grey dots and micrographic melanin particles in the dermis are indicated by arrows.…”

Section: Case Reportmentioning

confidence: 96%

Dermatoscopy of a minute melanoma

Rosendahl

Cameron

Bulinska

et al. 2011

Australasian Journal of Dermatology

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We present a case report of a naevoid lentigo maligna (World Health Organisation level 1 melanoma) on the nose of a 46-year-old man. He was under surveillance because of a past history of two melanomas and developed a new lesion. The visible lesion was 1.6 mm in maximum diameter as measured by the scale on the dermatoscope footplate. The dermatoscopic structures present were limited to dots arranged asymmetrically. We believe that the fact that some of these dots were grey provided a useful clue to the diagnosis of melanoma.

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“…In this context, “non-pigmented” means lesions with no melanin pigmentation (which may be black, brown, gray, or blue, depending on depth in the skin [18]). Such lesions may still have pigment due to keratin (yellow or orange) or hemoglobin (red, purple, blue or black).…”

Section: Prediction Without Pigment: a Decision Algorithm For Non-pigmentioning

confidence: 99%

Prediction without Pigment: a decision algorithm for non-pigmented skin malignancy

Rosendahl

Cameron

Tschandl

et al. 2014

Dermatol Pract Concept

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While there are several published comprehensive stepwise algorithmic methods for diagnosing pigmented skin malignancy, only limited material has been published for the stepwise assessment of non-pigmented lesions. We present a method based on pattern analysis, with a stepwise assessment, first, for ulceration, second, for white clues (defined as white lines, or in the case of a raised lesion any of the keratin clues: dermatoscopic white circles, dermatoscopic white structureless areas or surface keratin), and third, if no ulceration or white clues are present, proceed to vessel pattern analysis.This is a novel method, and apart from the assessment of white clues in raised lesions, it has not been formally tested. The priority of keratin clues in raised lesions over vessel pattern analysis has, however, been verified.It is conceded that this method is less specific than methods which have clues of pigmented structures, and accepting these limitations, Prediction without Pigment is a decision algorithm intended to guide the clinician in the decision as to whether to perform a biopsy rather than consistently leading to a specific diagnosis. Reaching a more specific diagnosis at the end of our flowchart can be achieved by weighing of clues both clinical and dermatoscopic, and that ability can be expected to improve with both knowledge and experience, but no diagnostic method, including this one, can be 100% sensitive in diagnosing malignancy, in particular, melanoma. Taking these limitations into account, any non-pigmented lesion, regardless of pattern analysis, which is raised and firm (nodular) and for which a confident, specific benign diagnosis cannot be made, should be excised to exclude the nodular variant of amelanotic melanoma.

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Dermoscopic Color Perspective

Cited by 32 publications

References 0 publications

Pseudofolliculitis barbae: a dermatoscopic correlate

Pseudofolliculitis barbae: a dermatoscopic correlate

Dermatoscopy of a minute melanoma

Prediction without Pigment: a decision algorithm for non-pigmented skin malignancy

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