Kaposi’s sarcoma

From dermoscopedia

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 Authored by: Pedro Zaballos     ·  Ignacio Gómez Martín

 Keywords:   kaposi sarcoma · vascular lesion
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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 malignantThis glossary term has not yet been described. vascular tumor. 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 no 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
  • Cheng et al.: Rainbow pattern in Kaposi's sarcoma under polarized dermoscopy: a dermoscopic pathological study. Br. J. Dermatol. 2009;160:801-9. PMID: 19067686. DOI.
  • Vázquez-López et al.: Dermoscopic rainbow pattern in non-Kaposi sarcoma lesions. Br. J. Dermatol. 2009;161:474-5. PMID: 19438855. DOI.