Abstract: Mohs micrographic surgery is a technique used to excise skin tumors based on comprehensive surgical mapping, in which the surgeon removes the tumor, followed by a complete histological evaluation of the tumor's margins. The correlation of the presence of a tumor in histological examinations and its precise location on the surgical map result in a complete removal of the tumor with maximum normal tissue preservation. The present article seeks to provide general practitioners and healthcare specialists with guidelines regarding recommendations for Mohs micrographic surgery to treat skin tumors, based on the most reliable evidence available in medical literature on the subject. This bibliographic review of scientific articles in this line of research was conducted based on data collected from MEDLINE/PubMed. The search strategy used in this study was based on structured questions in the Patient, Intervention, Control, and Outcome (PICO) format. MeSH terms were used as descriptors. The indications of this technique are related to recurrence, histology, size, definition of tumor margins, and location of tumors. These guidelines attempt to establish the indications of Mohs surgery for different types of skin tumors.

No Brasil, alguns serviços associam a curetagem da matriz ungueal à fenolização, como tentativa de aumentar a eficácia do tratamento da unha encravada. O objetivo deste trabalho foi comparar a taxa de cura entre a fenolização e a fenolização associada à curetagem da matriz. Foi realizado um estudo retrospectivo e incluídos 271 cantos encravados. Recorreram 5% após a realização da fenolização, e 7,7% após a fenolização com curetagem da matriz. Não houve diferença estatística entre as duas técnicas, mostrando não ser necessária a associação com a curetagem da matriz. A fenolização mostrou-se eficiente mesmo para o grau III.

Some services in Brazil combine curettage of the nail matrix with phenolization in the treatment of ingrown nails, with the objective of further increasing efficacy. The objective of this research was to compare the cure rates between the phenolization technique and phenolization associated with nail matrix curettage. A retrospective study was done which included 271 cases. There was only a 5% recurrence rate for the phenolization procedure, compared with 7.7% for combined phenolization/nail matrix curettage. There was no statistically significant difference between the two techniques, which indicated that there is no need for curettage of the nail matrix. Phenolization worked even for level III disease.

O pinçamento do leito ungueal gerado pela hipercurvatura transversa da unha é chamado de unha em pinça e pode provocar dor e constituir problema estético. A unha em pinça pode apresentar três tipos clínicos, mais comuns, sendo a unha em telha um deles. As causas podem ser hereditárias ou adquiridas. Os dedos dos pés são acometidos com maior freqüência. Os tratamentos conservadores são os preferidos pelos pacientes, porém, os tratamentos cirúrgicos produzem os melhores resultados. Das técnicas cirúrgicas, a técnica de Zook é opção diferente, pois, preserva a matriz e o tamanho da unha. Os autores apresentam cinco pacientes com unha em telha, tratados com a técnica de Zook.

The pinching of the distal nail bed, caused by transverse overcurvature of the nail is called pincer nail. It frequently causes pain and aesthetic problems. Pincer nail may present in three frequent clinical types, one being the tile-shaped nail. The causes may be hereditary or acquired. The toes are most frequently affected. Conservative treatments are preferred by patients, although surgical treatments produce better, longer-lasting results. Among the surgical techniques, Zook's technique differs from others, because it preserves the matrix and consequently the size of nail. The authors evaluated five patients who presented pincer nails and were treated using Zook's technique.