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Background The role of androgens on COVID-19 is well established. Proxalutamide is a second-generation, non-steroidal antiandrogen (NSAA) with the highest antiandrogen potency among NSAAs and concurrent regulation of angiotensin-converting enzyme 2 (ACE2) expression and inflammatory response. Proxalutamide has been demonstrated to be effective to prevent hospitalizations in early COVID-19 in randomized clinical trials (RCTs). Conversely, in hospitalized COVID-19 patients, preliminary results from two different arms of an RCT (The Proxa-Rescue AndroCoV Trial) also demonstrated a reduction in all-cause mortality. This study aims to report the final, joint results of the two arms (North arm and South arm) of the Proxa-Rescue AndroCoV trial of the two arms (North and South arms) combined, and to evaluate whether COVID-19 response to proxalutamide was consistent across different regions (Northern Brazil and Southern Brazil). Materials and methods Upon randomization, hospitalized COVID-19 patients received either proxalutamide 300mg/day or placebo for 14 days, in addition to usual care, in a proxalutamide:placebo ratio of 1:1 in the North arm and 4:1 in the South arm (ratio was modified due to preliminary report of high drug efficacy). Datasets of the South and North arms were combined, and statistical analysis was performed for the overall study population. Proxalutamide was compared to placebo group for 14-day and 28-day recovery (discharge alive from the hospital) and mortality rates, and overall and post-randomization hospitalization stay. Results of proxalutamide and placebo groups were also compared between the North and South arms. Analysis was also performed stratified by sex and baseline WHO COVID Ordinary Score. Results A total of 778 subjects were included (645 from the North, 317 from the proxalutamide group and 328 from the placebo group; 133 from the South arm, 106 from the proxalutamide group and 27 from the placebo group). Recovery rate was 121% higher in proxalutamide than placebo group at day 14 [81.1% vs 36.6%; Recovery ratio (RecR) 2.21; 95% confidence interval (95% CI), 1.92-2.56; p<0.0001], and 81% higher at day 28 (98.1% vs 47.6%; RecR, 1.81; 95% CI, 1.61-2.03; p<0.0001). All-cause mortality rate was 80% lower in proxalutamide than placebo group at Day 14 [8.0% vs 39.2%; Risk ratio (RR), 0.20; 95% CI, 0.14-0.29; p<0.0001], and 78% lower at Day 28 (10.6% vs 48.2%; RR, 0.22; 95% CI 0.16-0.30). Post-randomization time-to-discharge was shorter in proxalutamide [median, 5 days; interquartile range (IQR), 3-8] than placebo group (median, 9 days; IQR, 6-14) (p<0.0001). Results were statistically similar between North and South arms for all measured outcomes. Males and females presented similar results in all outcomes. Patients that did not require oxygen use (scores 3 and 4) did not present statistically significant improvement in recovery and mortality rates, whereas scores 5 and 6 presented significant improvements in all outcomes (p<0.0001 for all). Conclusion Proxalutamide increased recovery rate, reduced mortality rate and shortened hospital stay in hospitalized COVID-19 patients. Results were similar between the two different arms, providing further consistency for the efficacy of proxalutamide when used in late-stage COVID-19.

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INTRODUCTION: Transverse overcurvature of the nail (TON) represents one of the main reasons for dermatological consultations due to nail conditions. Association between TON and subungual hyperkeratosis is common and simulates onychomycosis, constituting a difficult differential diagnosis by clinical features. Many cases are treated in daily practice with antifungal therapy even without mycological confirmation. The aim of this study was to determine the prevalence of onychomycosis among patients with TON associated with subungual hyperkeratosis. METHODS: All subjects with clinical diagnosis of TON and subungual hyperkeratosis were subjected to a thorough clinical history, detailed clinical examination, digital photography, and collection of nail clipping and subungual debris for histopathological and microbiological examination (direct microscopy). RESULTS: Sixty-five samples were collected from 62 female (95.4%) and 3 male (4.6%) participants. Age range was between 34 and 83 years (mean age, 61.2 years). Twenty-eight samples were positive for onychomycosis, giving a 43.07% prevalence rate of onychomycosis among TON associated with hyperkeratosis. DISCUSSION/CONCLUSION: According to our data, the prevalence of onychomycosis in patients with TON associated with subungual hyperkeratosis was 43.07%, confirming the need to rule out fungal infection in TON associated with subungual hyperkeratosis prior to considering any unnecessary antifungal treatment.

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Abstract: Mycological examination is still the cornerstone for the diagnosis of onychomycosis for many dermatologists, but sampling technique interferes on its sensitivity and specificity. Nail abrasion may be used to reach the most proximal part of the lesion and can be easily accomplished with an electric abrasor. We suggest nail plate dermoscopy to identify the best location for localized abrasion to obtain adequate samples for mycological examination.

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Mycological examination is still the cornerstone for the diagnosis of onychomycosis for many dermatologists, but sampling technique interferes on its sensitivity and specificity. Nail abrasion may be used to reach the most proximal part of the lesion and can be easily accomplished with an electric abrasor. We suggest nail plate dermoscopy to identify the best location for localized abrasion to obtain adequate samples for mycological examination.

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Onicomatricoma é neoplasia benigna específica do complexo ungueal descrita em 1992, sendo o único tumor em que a alteração da placa ungueal é produzida ativamente pela lesão. Encontra-se na matriz ungueal apresentando projeções digitiformes que ficam impressas na placa ungueal, resultando em espessamento, estrias longitudinais, coloração amarelada e hemorragias em estilhaço. Apesar de descrito como tumor raro acredita-se que seja subdiagnosticado. O objetivo deste artigo é revisar as características clínicas e os exames complementares subsidiários para o reconhecimento e diagnóstico desse tumor.

Onychomatricoma is a benign neoplasia that occurs pecifically in the nail apparatus. It was described in 1992, and is the only tumor in which the change of the nail plate is actively caused by the lesion. It lies in the nail matrix,and has fingerlike projections that are embedded in the nail plate, resulting in thickening, longitudinal grooves, yellow discoloration and splinter hemorrhages. Although described as a rare tumor, it is believed to be underdiagnosed. The present study is aimed at reviewing onychomatricoma's clinical features as well as the complementary examinations that are used to recognize and diagnose this tumor.

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The glomus tumor is an uncommon benign neoplasm of glomus cells. In the majority of the cases it is presented as a solitary painful papule in the subungual region. We report a rare case of a patient with two individual synchronous glomus tumors under the nail bed of the same finger.

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The glomus tumor is an uncommon benign neoplasm of glomus cells. In the majority of the cases it is presented as a solitary painful papule in the subungual region. We report a rare case of a patient with two individual synchronous glomus tumors under the nail bed of the same finger.

O tumor glômico é uma neoplasia benigna de células glômicas. Na maioria dos casos se apresenta como uma pápula solitária dolorosa na região subungueal. Relatamos o caso raro de um paciente com dois tumores glômicos sincrônicos sob o leito ungueal do mesmo dedo.

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A curvatura transversa é uma deformidade inestética comum da lâmina ungueal. Existem várias técnicas, conservadoras e cirúrgicas, empregadas no tratamento dessa condição. O presente estudo descreve uma técnica simples e de baixo custo, que emprega enxertos dérmicos autólogos.

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Patients presenting with plantar puncture wounds with presence of foreign bodies are treated in emergency departments, dermatology and orthopedic clinics. The clinical features of these lesions are rarely cited in journals and textbooks of dermatology. We report a case of foreign body in the plantar surface of the foot, in which clinical history and dermatological examination were decisive for the diagnosis.

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Pacientes com ferimentos penetrantes plantares com presença de corpo estranho são atendidos em serviços de emergência, clínicas ortopédicas e dermatológicas. As características clínicas dessas lesões são pouco citadas em periódicos e livros textos dermatológicos. Relatamos um caso de corpo estranho plantar em que a história clínica e o exame dermatológico foram decisivos para o diagnóstico

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Pacientes com ferimentos penetrantes plantares com presença de corpo estranho são atendidos em serviços de emergência, clínicas ortopédicas e dermatológicas. As características clínicas dessas lesões são pouco citadas em periódicos e livros textos dermatológicos. Relatamos um caso de corpo estranho plantar em que a história clínica e o exame dermatológico foram decisivos para o diagnóstico.

Patients presenting with plantar puncture wounds with presence of foreign bodies are treated in emergency departments, dermatology and orthopedic clinics. The clinical features of these lesions are rarely cited in journals and textbooks of dermatology. We report a case of foreign body in the plantar surface of the foot, in which clinical history and dermatological examination were decisive for the diagnosis.

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