Clinical, dermoscopic and histopathological evaluation of the Meyerson nevus: case report

O nevo de Meyerson ocorre quando uma rara erupção eczematosa focal e transitória surge ao redor de lesões melanocíticas. O mesmo fenômeno também foi observado em lesões não melanocíticas. O caso relatado é o de um doente masculino, 25 anos, que há dois meses notara surgimento de eritema e prurido, circundando dois nevos, localizados no abdome. As lesões eram atípicas à dermatoscopia e procedeu-se à excisão cirúrgica dos dois nevos. O exame histopatológico revelou nevos melanocíticos compostos displásicos, envolvidos por espongiose e vesículas intraepidérmicas. O presente relato sugere que o fenômeno de Meyerson não modifica as características dermatoscópicas dos nevos.Meyerson nevi occur whenever a rare focal and transitory eczematous eruption arises around melanocytic lesions. The same phenomenon has also been observed in non-melanocytic lesions as well. Herein we report the case of a 25 year old, male patient, who had noticed, two months before, the arising of a pruriginous and erithematous halo around two nevi localized on his abdomen. The lesions were found to be atypical on dermoscopic examination and he was submitted to surgical excision of both nevi. Histopathological examination revealed displastic compound melanocytic nevi, surrounded by intraepidermical vesicles and spongiosis. Present report suggests that Meyerson phenomenon does not seem to alter dermoscopic features of nevi

Padronização da técnica cirúrgica de fenolização de matriz ungueal para onicocriptose

A onicocriptose é afecção bastante comum em adolescentes e adultos jovens. Muitos tratamentos já foram descritos, conservadores e clínicos. Descrevemos a padronização da técnica de cirurgia de onicocriptose com fenol 88% realizada desde 2009 no ambulatório de dermatologia ligado a um serviço universitário

Fine-needle aspiration biopsy of disseminated sporotrichosis: A case report

In this report, we describe a case of disseminated sporotrichosis that was diagnosed by fine-needle aspiration biopsy (FNAB). The cytologic smears exhibited a large number of macrophages, few polymorphonuclear neutrophils and numerous round or oval, sometimes elongated, isolated and scattered yeast-like structures localized extracellularly or inside macrophages. These structures were clearly visualized by Giemsa and Papanicolaou methods. Cultures from skin biopsy material revealed,fungal colonies which were subsequently identified as Sporothrix schenckii. The cytologic aspects, the correlation with histologic findings and the differential cytologic diagnosis were reviewed