Saratov JOURNAL of Medical and Scientific Research

Novosibirsk State University

Clinical dermatoscopy of big melanocytic naevuses in patients with psoriasis

Year: 2012, volume 8 Issue: №2 Pages: 646-650
Heading: Skin Diseases Article type: Original article
Authors: Sergeyeva I.G., Krinitsyna J.M., Onipchenko V.V., Makarova N.G.
Organization: Novosibirsk State University
Summary:

The study aimed to determine clinical characteristics of dermatoscopy of big melanocytic naevuses (MN) in patients with psoriasis. Methods. The were 32 patients with psoriasis (11 women at an average age of 37,4 years) and 100 people (79 women at an average age of 27,8 years) with no psoriasis. Both groups had a survey and full photometry screening of skin. Besides Fitzpatrick skin typing test was used, pigmentary formations were examined using dermato-scope HEINE MINI 3000 10X with 70 % ethyl alcohol immersion. Naevuses were estimated by ABCD and ABC scales. Results. MN more than 5 mm in diameter are more often in patients with psoriasis (68,8 %) than in control group (37 %). However in control group there are less naevuses of appropriate dermatological dysplastic formations criteria (32 %) comparison to the group without psoriasis (42 %). There is an important fact that patients with psoriasis often have 2-phototype of skin and artifcial insolation (tanning bed, PUVA, narrow-band phototherapy 311 nm. Conclusion. 68,8 % patients have MN more than 5 mm in diameter. 32 % of patients with psoriasis had MN of dysplastic naevus criteria according to Pehamberger. In one patient naevus was of appropriate malignant tumors criteria according to ABCD and ABC scales.

Keywords: psoriasis
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