Universidade Católica de Pelotas, Pelotas, RS, Brazil.
Universidade Católica de Pelotas, Pelotas, RS, Brazil; Universidade Federal de Pelotas, Pelotas, RS, Brazil.
An Bras Dermatol. 2021 May-Jun;96(3):328-331. doi: 10.1016/j.abd.2020.08.013. Epub 2021 Mar 15.
Cutis rhomboidalis nuchae was assessed in a 65-year-old patient. Optical microscopy showed basophilic agglomerations in the reticular dermis with decreased elastic fibers. Transmission electron microscopy showed elongated, curved and fragmented structures, and in their interior the presence of electron-dense lumps was reduced and irregular, similar to modified elastic fibers, whereas the collagen fibers had a normal aspect. Scanning electron microscopy showed deposits between the bundles of collagen, resembling pebbles or stones. These findings demonstrate that, at one stage of the disease, the collagen remains normal and the alterations are seen in the elastic tissue.
我们评估了一位 65 岁患者的菱形皮肤。光学显微镜显示网状真皮中有嗜碱性聚集物，弹性纤维减少。透射电子显微镜显示出拉长、弯曲和碎片化的结构，内部电子致密团块减少且不规则，类似于改良的弹性纤维，而胶原纤维则正常。扫描电子显微镜显示在胶原束之间有沉积物，类似于卵石或石头。这些发现表明，在疾病的一个阶段，胶原仍然正常，而弹性组织出现改变。
