The spectrum of dermatoscopic patterns in blue nevi

被引:24
作者
Di Cesare, Antonella [1 ]
Sera, Francesco [3 ]
Gulia, Andrea [1 ]
Coletti, Gino [2 ]
Micantonio, Tamara [1 ]
Fargnoli, Maria Concetta [1 ]
Peris, Ketty [1 ]
机构
[1] Univ Aquila, Dept Dermatol, I-67100 Laquila, Italy
[2] Hosp San Salvatore, Dept Pathol, Laquila, Italy
[3] UCL, Inst Child Hlth, Med Res Council, Ctr Epidemiol Child Hlth, London, England
关键词
basal cell carcinoma; blue nevi; dermatoscopy; local features; melanoma; pigmentation; PIGMENTED SKIN-LESIONS; BASAL-CELL CARCINOMA; SURFACE MICROSCOPY; MELANOCYTIC NEVI; DERMOSCOPY; DERMATOFIBROMA; FEATURES; MELANOMA;
D O I
10.1016/j.jaad.2011.08.018
中图分类号
R75 [皮肤病学与性病学];
学科分类号
100206 ;
摘要
Background: Blue nevi are congenital or acquired, dermal dendritic melanocytic proliferations that can simulate melanocytic and nonmelanocytic lesions including melanoma, cutaneous metastasis of melanoma, Spitz/Reed nevi, and basal cell carcinoma. Objective: We sought to investigate global and local dermatoscopic patterns of blue nevi compared with melanomas and basal cell carcinomas. Methods: We retrospectively analyzed global and local features in 95 dermatoscopic images of blue nevi and in 190 melanomas and basal cell carcinomas that were selected as control lesions on the basis of similar pigmentation. Lesion pigmentation was classified as monochromatic, dichromatic, or multichromatic. Results: A global pattern characterized by homogeneous pigmentation was observed in all of 95 (100%) blue nevi. Eighty of 95 (84.2%) blue nevi presented a homogeneous pattern consisting of one color (blue, black, or brown) or two colors (blue-brown, blue-gray, or blue-black). Fifteen of 95 (15.8%) blue nevi had a multichromatic (blue, gray, black, brown, and/or red) pigmentation. In all, 47 of 95 (49.5%) blue nevi were characterized by pigmentation in the absence of pigment network or any other local dermatoscopic features. And 48 of 95 (50.5%) blue nevi showed local dermatoscopic patterns including whitish scarlike depigmentation, dots/globules, vascular pattern, streaks, and networklike pattern. Limitations: The study was retrospective and involved only Caucasian people of Italian origin. Conclusion: The characteristic feature of blue nevi is a homogeneous pigmentation that is blue, blue-gray, blue-brown, or blue-black. We showed that a wide spectrum of local dermatoscopic features (whitish scarlike depigmentation, dots/globules, peripheral streaks or vessels) may also be present. In such cases, clinical and dermatoscopic distinction from melanoma or nonmelanocytic lesions may be difficult or impossible, and surgical excision is necessary. (J Am Acad Dermatol 2012;67:199-205.)
引用
收藏
页码:199 / 205
页数:7
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