Imaging features for the evaluation of skin and nail infections.

Clinical manifestations of dermatological and musculoskeletal conditions can sometimes overlap, leading to confusion in diagnosis. Patients with nail and skin infections may undergo imaging examinations with suspicions of muscle, tendon, or joint injuries. Dermatological infections often involve soft tissues and musculoskeletal structures, and their etiology can range from fungi, bacteria, viruses, to protozoa. Relying solely on physical examination may not be sufficient for accurate diagnosis and treatment planning, necessitating the use of complementary imaging exams. The objective of this paper is to present and discuss imaging findings of the main infectious conditions affecting the nail apparatus and skin. The paper also highlights the importance of imaging in clarifying diagnostic uncertainties and guiding appropriate treatment for dermatological conditions.

Advantages of Nail Surgical Procedures Using a 3D Biomodel.

Introduction: 3D biomodels represent a cutting-edge advancement in medical imaging technology. The incorporation of 3D technologies in dermatology through the acquisition of onychological images, 3D reconstruction, and development of customized equipment to assist in surgeries demonstrated reduction in operating times and improved surgical outcomes. Additionally, the use of 3D printing in surgical simulation provided a safe environment for training and education. This article explores the application of 3D biomodels in dermatology, focusing on three clinical cases involving nail tumors. Case Presentation: In case 1, a glomus tumor was visualized in 3D, guiding the creation of a personalized surgical device. The minimally invasive surgery, facilitated by the biomodel, resulted in successful tumor removal. Case 2, featuring a subungual keratoacanthoma, utilized 3D biomodels for conservative surgery planning, anatomical comprehension, and patient communication. Case 3 involved a longitudinal groove, where biomodels aided in precise lesion localization and surgical planning. Conclusion: The integration of virtual and physical anatomical biomodels proves valuable in surgical dermatology, contributing to enhanced treatment quality, patient safety, and medical education.

Onychocytic matricoma

Abstract Onychocytic matricoma is a newly described tumor of the nail matrix. Clinically, it presents with localized thickening of the nail plate and melanonychia. Histologically, it represents a benign acanthoma of onychocytes. There are 8 cases reported in the literature. A 12-year-old girl presented with localized melanonychia and concurrent thickening of the nail plate restricted to the area of pigmentation affecting the right thumb, with no history of trauma or pain. We report a case of this rare tumor occurring in late childhood and provide a comprehensive review of its clinical presentation and differential diagnosis. Both clinicians and dermatopathologists should be aware of the presentation of onychocytic matricoma and include it in their scope of diagnosis of longitudinal nail bands.

Comparison of nail lacquer clobetasol efficacy at 0,05%, 1% and 8% in nail psoriasis treatment: prospective, controlled and randomized pilot study / Comparação da eficácia do clobetasol em esmalte 0,05%, 1% e 8% no tratamento da psoríase ungueal: estudo piloto, prospectivo, controlado e randomizado

BACKGROUND: Nail psoriasis may affect up to 90% of patients with psoriasis in the course of the disease throughout their lives and it is often a therapeutic challenge to dermatologists. Topical treatments described in the literature have demonstrated variable efficacy, and unsatisfactory results have been associated to inefficient penetration of the active ingredient into the nail plate and proximal nail fold. Recently the use of clobetasol on nail lacquer vehicle has been suggested, with satisfactory results and no side effects. OBJECTIVE: To determine the efficacy and safety of clobetasol in nail lacquer vehicle in three concentrations (0.05%, 1% and 8%) in patients with nail psoriasis. METHODS: Prospective, controlled, randomized pilot study in fifteen patients with nail bed and/or nail matrix psoriasis in both hands, subdivided into three groups: A(0.05% clobetasol nail lacquer), B(1% clobetasol nail lacquer) and C(8% clobetasol nail lacquer). All groups used clobetasol nail lacquer on the left hand and base coat nail lacquer as control on the right, twice a week for 16 weeks. Clinical evaluation was done by photographic records and the NAPSI score of both treated and control hands, as well as modified NAPSI score of the most affected nail of the treated hand. RESULTS: Group C showed a statistically relevant clinical response compared to the other groups, reflected in the improvement of clinical parameters, of treated hand NAPSI score, when compared to the control hand, and modified NAPSI score of the most affected nail in the treated hand. CONCLUSION: The 8% clobetasol nail lacquer was effective and safe, and it can be considered a good option of topical therapy in the treatment of nail psoriasis.

FUNDAMENTOS: A psoríase ungueal, de difícil manejo terapêutico, pode afetar até 90% dos portadores de psoríase no transcurso da doença, ao longo de suas vidas. Os tratamentos tópicos descritos na literatura têm eficácia variável, muitas vezes com resultados insatisfatórios causados pela ineficiência da penetração da substância ativa através da placa ungueal e dobra proximal. Recentemente tem sido proposto o uso do clobetasol em veículo esmalte, demonstrando resultados satisfatórios e ausência de efeitos colaterais. OBJETIVO: Determinar a eficácia e segurança do clobetasol em veículo esmalte em três concentrações (0,05%, 1% e 8%) nos pacientes com psoríase ungueal. MÉTODOS: Estudo piloto, prospectivo, controlado e randomizado com quinze pacientes portadores de psoríase ungueal em ambas as mãos. Os pacientes foram subdivididos em três grupos: A (esmalte clobetasol 0,05%), B (esmalte de clobetasol 1%) e C (esmalte de clobetasol 8%). Os pacientes usaram esmalte de clobetasol na mão esquerda e esmalte base (sem medicação - controle) na direita, aplicandoos duas vezes por semana, por 16 semanas. Fez-se a avaliação clínica por registros fotográficos e pelos MÉTODOS: NAPSI da mão tratada e controle e NAPSI modificado da unha mais acometida da mão tratada. RESULTADOS: O grupo C apresentou de forma estatisticamente significativa a resposta clínica mais relevante, refletida na melhora dos parâmetros clínicos, do NAPSI da mão tratada comparado ao da mão controle e do NAPSI modificado da unha mais acometida da mão tratada. CONCLUSÕES: Neste estudo piloto, o esmalte de clobetasol a 8% foi eficaz e seguro, mostrando-se uma boa opção de terapêutica tópica no tratamento da psoríase ungueal.

Utilidade da técnica de fechamento cirúrgico "ponto em alfa" na onicocriptose / Benefits of the alpha stitch technique in surgical closure in onychocryptosis

Introdução: Aspecto pouco avaliado da onicocriptose ­ principal causa de cirurgia do aparelho ungueal ­ é como deve ser realizado o fechamento cirúrgico. Descreve-se nova técnica denominada "ponto alfa" que permite a retificação da dobra ungueal por posicioná-la no nível da placa ou abaixo dela. Objetivo: Demonstrar a utilidade da técnica de fechamento cirúrgico "ponto alfa" na matricectomia cirúrgica da onicocriptose. Métodos: Selecionados 20 pacientes com onicocriptose graus II e III, submetidos à matricectomia cirúrgica com acompanhamento durante seis meses. O fechamento cirúrgico foi realizado com a técnica "ponto alfa". Resultados: No total, 27 dobras ungueais laterais foram operadas, 81,8% delas com resultado esperado, e 18,1% com resultado duvidoso. Conclusões: O "ponto alfa" permite correta cicatrização da dobra ungueal retificada, posicionada no nível da placa ungueal ou abaixo dela, com bons resultados estéticos, rápida recuperação, mínima morbidade e baixo número de recidivas. Poderá ser usado em procedimentos cirúrgicos de outras afecções ungueais.

Introduction: A poorly described aspect of onychocryptosis ­ the main cause for nail unit surgeries ­ is how to perform its surgical closure. The present article describes a new technique denominated alpha stitch that allows the straightening out of the nail fold by positioning it at or below the nail plate's level.Objective: To demonstrate the benefits of the alpha stitch surgical closure technique in the surgical matricectomy for onychocryptosis.Methods: Twenty patients with onychocryptosis grades II and III underwent surgicalmatricectomy and were followed up for six months. The surgical closure was performed using the alpha stitch technique.Results: A total of 27 lateral nail folds were operated, with 81.8% yielding the expected result, and 18.1% presenting uncertain outcomes.Conclusions: The alpha stitch allows the proper healing of the straightened out nail fold, which is positioned at or below the nails plate's level, with good results, fast recovery, minimal morbidity and a small number of recurrences. The technique can also be used in surgical procedures involving other nail disorders.

Itraconazol no tratamento da esporotricose: relato de 3 casos / Itraconsazole in the treatment of sporothricosis: report of three case

O itraconazol é um composto triazólico primariamente fungistático que age alterando a permeabilidade da célula fúngica. Tem mostrado maior atividade contra o Sporothrix schnckii quando comparado a outros antifúngicos. Os autores descrevem três casos de esporotricose na forma cutâneo-linfática tratados com itraconazol na dose de 100 mg por dia, via oral, durante três meses aproximadamente, com completa cicatrizaçäo das lesöes

Hiperlipoproteinemia tipo IIa: caso clínico com três manifestaçöes dermatológicas / Hyperlipoproteinemia type IIa: case report presenting three dermatological manifestations

Os autores relatam um caso de hiperlipoproteinemia tipo IIa, em paciente feminina, branca, 31 anos, com exuberante associaçao de xantelasma, xantoma tendinoso, xantoma tuberoso e hipertensao arterial. O diagnóstico foi estabelecido através dos exames: clínico, lipidograma e histopatológico. Foi feita também uma revisao da literatura.