Dermoscopy provides useful information for the management of melanonychia striata
Dermoscopy provides useful information for the management of melanonychia striata
复制标题
DOI：
10.1111/j.1529-8019.2007.00106.x
复制
发表时间：
2007-01-01
影响因子：
3.6
通讯作者：
Dalle, Stephane
中科院分区：
文献类型：
--
作者：
Thomas, Luc;Dalle, Stephane
条纹黑甲的诊断通常很困难，可疑病例需要对指甲基质进行活组织检查。然而，甲板的皮肤镜检查提供了有趣的信息，以便更好地选择需要进行病理检查的病例。如有平行规则线条的棕色纵纹，则可诊断为甲器黑色素细胞痣。另一方面，棕色色素沉着的存在被厚度、间距、颜色或平行度不规则的纵线覆盖，这对黑色素瘤是非常有利的。在扁桃体、扁桃体增多症、种族或药物引起的色素沉着以及创伤后色素沉着的情况下，可观察到灰色同质线条。血斑的特点是近端边缘呈圆形，远端边缘呈丝状，高度提示甲下出血。皮肤镜检查甲板游离缘可以提供病变位置的信息；甲板背部的色素沉着有利于近端甲骨基质的病变，而指甲边缘下部的色素沉着有利于远端基质的病变。
The diagnosis of melanonychia striata is often difficult, and a biopsy of the nail matrix is required in doubtful cases. However, dermoscopic examination of the nail plate offers interesting information in order to better select the cases in which pathologic examination is indicated. In the case of brown longitudinal pigmentation with parallel regular lines, the diagnosis of nail apparatus melanocytic nevus could be made. On the other hand, the presence of a brown pigmentation overlaid by longitudinal lines irregular in their thickness, spacing, color, or parallelism is highly in favor of a melanoma. Gray homogeneous lines are observed in case of lentigo, lentiginoses, ethnic or drug-induced pigmentations, and in post-traumatic pigmentations. Blood spots are characterized by their round-shaped proximal edge and their filamentous distal edge and are highly suggestive of subungual hemorrhages. Dermoscopic examination of the free edge of the nail plate gives information on the lesion location; pigmentation of the dorsum of the nail plate is in favor of a proximal nail matrix lesion, whereas pigmentation the lower part of the nail edge is in favor of a lesion of the distal matrix.