Kaposi’s sarcoma

From dermoscopedia

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 Editor: Pedro Zaballos

 Author(s): Pedro Zaballos     ·  Ignacio Gómez Martín
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Description DermoscopyThe examination of [skin lesions] with a 'dermatoscope'. This traditionally consists of a magnifier (typically x10), a non-polarised light source, a transparent plate and a liquid medium between the instrument and the skin, and allows inspection of skin lesions unobstructed by skin surface reflections. Modern dermatoscopes dispense with the use of liquid medium and instead use polarised light to cancel out skin surface reflections. of Kaposi sarcomaThis glossary term has not yet been described.
Author(s) Pedro Zaballos · Ignacio Gómez Martín
Responsible author Pedro Zaballos→ send e-mail
Status unknown
Status update August 15, 2017
Status by Ralph P. Braun


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Vascular proliferation caused by human herpesvirus-8 (HHV-8). It is considered a low-grade malignant vascular tumorThis glossary term has not yet been described.. There are four recognized clinical subsets of Kaposi’s sarcoma: classic, endemic, iatrogenic, and HIV related. Clinically the cutaneous lesions begin as reddish-blue macules or plaques that gradually enlarge and become nodularThis glossary term has not yet been described..
Dermoscopy[1][2]:

  • Homogeneous patternA pattern lacking any definable pigment structures, structureless pattern with differing colorsThis glossary term has not yet been described. (i.e., whitish, pinkish, reddish, bluish, or violaceous) in different lesions in the same patient.
  • Rainbow-like appearance: multicolored areas showing various colors of the rainbow spectrum. This sign is not pathognomonic of Kaposi’s sarcoma and it is only seen with polarized lightThis glossary term has not yet been described. dermoscopyThe examination of [skin lesions] with a 'dermatoscope'. This traditionally consists of a magnifier (typically x10), a non-polarised light source, a transparent plate and a liquid medium between the instrument and the skin, and allows inspection of skin lesions unobstructed by skin surface reflections. Modern dermatoscopes dispense with the use of liquid medium and instead use polarised light to cancel out skin surface reflections..
  • Whitish structureless areas, vascular structuresThis glossary term has not yet been described., scale, and a white collarette may also be seen.
    Vascular Figure 6.jpg


ReferencesThis is material contained in a footnote or bibliography holding further information.
  1. Cheng et al.: Rainbow patternCircumscribed structureless areas displaying colors of the whole spectrum of visible light in Kaposi's sarcoma under polarized dermoscopy: a dermoscopic pathological study. Br. J. Dermatol. 2009;160:801-9. PMID: 19067686. DOI.
  2. Vázquez-López et al.: Dermoscopic rainbow patternCircumscribed structureless areas displaying colors of the whole spectrum of visible light in non-Kaposi sarcoma lesions. Br. J. Dermatol. 2009;161:474-5. PMID: 19438855. DOI.