Nail Disorders in Patients Living with HIV Coinfected with Monkeypox: A Clinical Study in 69 Mexican Cases.

Introduction: Several infectious diseases can present nail manifestations, which may be useful for diagnosis and prognosis, and only a few reports have been made regarding monkeypox (mpox). The objective of this study was to describe the clinical characteristics of nail alterations in patients living with HIV coinfected with mpox.

Methods: A prospective, cross-sectional study included patients living with HIV/AIDS, coinfected with mpox.

Biomass-derived substrate hydrogenation over rhodium nanoparticles supported on functionalized mesoporous silica.

The use of supported rhodium nanoparticles (RhNPs) is gaining attention due to the drive for better catalyst performance and sustainability. Silica-based supports are promising for RhNP immobilization because of their thermal and chemical stability. Functionalizing silica allows for the design of catalysts with improved activity for biomass transformations.

Deep Convolutional Neural Network for Accurate Classification of Myofibroblastic Lesions on Patch-Based Images.

Objective: This study aimed to implement and evaluate a Deep Convolutional Neural Network for classifying myofibroblastic lesions into benign and malignant categories based on patch-based images.

Methods: A Residual Neural Network (ResNet50) model, pre-trained with weights from ImageNet, was fine-tuned to classify a cohort of 20 patients (11 benign and 9 malignant cases). Following annotation of tumor regions, the whole-slide images (WSIs) were fragmented into smaller patches (224 × 224 pixels).

[Translated article] Clinical and Histopathologic Features of Subungual Melanoma in 57 Mexican Patients: A 5-Year Cohort Study.

Although subungual melanoma is uncommon, it is associated with worse outcomes than melanomas in other locations and accounts for 1% to 23% of all melanomas, depending on the population. The aim of this study was to describe the clinical and histopathologic features of subungual melanoma in a Mexican population. We identified 303 patients with melanoma, and of these, 19% (57 patients with a median age of 71 years) had subungual melanoma.

Clinical and Histopathologic Features of Subungual Melanoma in 57 Mexican Patients: A 5-Year Cohort Study.

Although subungual melanoma is uncommon, it is associated with worse outcomes than melanomas in other locations and accounts for 1% to 23% of all melanomas, depending on the population. The aim of this study was to describe the clinical and histopathologic features of subungual melanoma in a Mexican population. We identified 303 patients with melanoma, and of these, 19% (57 patients with a median age of 71 years) had subungual melanoma.

Oral cancer and precancer in Oral Pathology and Medicine curricula of Mexican dental schools.

Objective: To identify the teaching-learning process characteristics of Oral Pathology and Medicine (OP&M) related to oral potentially malignant disorders (OPMDs) and oral cancer (OC), in the dental schools' curricula in Mexico, to analyze the approach given to this topic worldwide, and to provide the possible solution strategies.

Materials And Methods: Questionnaires were sent to OP&M deans and professors from public Mexican Universities to explore the curriculum and academic profile of the dental schools. The recommendations gathered from a workshop with expert professors on the challenges in OPMD/OC teaching were reported.

Transformation of a myelodysplastic syndrome to acute myeloid leukemia and concurrent necrotizing sweet syndrome.

The Sweet's syndrome, is an inflammatory skin disorder characterized by extensive infiltration of neutrophils in the dermis with extension to the subcutis, known as acute febrile neutrophilic dermatosis. It may occur as a paraneoplastic syndrome. To our knowledge, there are currently few reports about transformation of a myelodysplastic syndrome to acute myeloid leukemia and concurrent necrotizing Sweet syndrome in the literature.

RhNPs supported on -functionalized mesoporous silica: effect on catalyst stabilization and catalytic activity.

Amine and nicotinamide groups grafted on ordered mesoporous silica (OMS) were investigated as stabilizers for RhNPs used as catalysts in the hydrogenation of several substrates, including carbonyl and aryl groups. Supported RhNPs on functionalized OMS were prepared by controlled decomposition of an organometallic precursor of rhodium under dihydrogen pressure. The resulting materials were characterized thoroughly by spectroscopic and physical techniques (FTIR, TGA, BET, SEM, TEM, EDX, XPS) to confirm the formation of spherical rhodium nanoparticles with a narrow size distribution supported on the silica surface.

Circumscribed storiform collagenoma, an unusual tumor.

Circumscribed storiform collagenoma is a rare benign tumor. It appears as an isolated skin lesion or as part of the clinical spectrum of Cowden syndrome. The pathogenesis is still controversial.

Langerhans Cell Histiocytosis with Isolated Cutaneous Involvement Refractory to Polychemotherapy: A Case Report.

Langerhans cell histiocytosis (LCH) is a neoplasm of the monocyte-macrophage lineage, characterized by clonal proliferation and dissemination of cells that express CD1a+ and CD207. It is a disorder that predominates in childhood. Although the skin is the second most frequently affected organ (30-60%), isolated cutaneous involvement is rare; its frequency does not exceed 4 to 12 percent of cases.

Effective Treatment of Morbihan's Disease with Long-term Isotretinoin: A Report of Three Cases.

Morbihan's disease is characterized by the presence of chronic and persistent edema of the periorbital tissue, forehead, glabella, nose, and cheeks. In some cases, it is related to acne and rosacea, but its exact etiology remains unknown. A defined therapeutic approach has yet to be established for the treatment of Morbihan's disease.

[Mexican consensus on the diagnosis and treatment of atopic dermatitis in adolescents and adults].

Background: The diagnostic approaches and therapeutic strategies of atopic dermatitis (AD) are generally inconsistent among physicians and health institutions.

Objective: To develop a consensus statement among experts to reduce the variations in practice regarding the diagnosis and treatment of patients ≥ 12 years with AD to improve their care.

Methods: Systematic literature search in PubMed and GREAT.

Thermomechanical characterization of an amylose-free starch extracted from cassava (Manihot esculenta, Crantz).

The aim of this study was to determine and compare the melting (T), glass transition (T) and mechanical relaxation (T) temperatures of a new waxy cassava starch. Thermal transitions measurements were obtained by Differential Scanning Calorimetry (DSC) and Dynamical Mechanical Thermal Analysis (DMTA). The experimental data showed a high correlation between water volume fraction and melting temperature (T) indicating that the Flory-Huggins theory can be used to describe the thermal behavior of this starch.

[Isotretinoin and depressive symptoms in patiens with severe and recurrent acne].

Background: Since use of isotretinoin for acne management it has been published controversial results about its association with depression. The objective of this study was to know if use of isotretinoin in patients with severe and recurrent acne (SRA) is associated with depression.

Methods: 22 patients with diagnosis of SRA were included from the National Medical Center La Raza's Acne Clinic.

[Cutaneous manifestations of leukemia].

Introduction: To describe the type and frequency of cutaneous manifestations of leukemia.

Methods: Observational, descriptive study. We included patients over 16 years of age, with confirmed diagnosis of leukemia from the Hematology and Dermatology Departments of the outpatient clinic and from in-patients.

[Toxic epidermal necrolysis treated with human gamma globulin].

Toxic epidermal necrolysis and Stevens Johnson syndrome are severe adverse cutaneous drug reactions that predominantly involve the skin and mucous membranes. We report a case of 43 year old female with 75 % body surface area affected, treated with intravenous immunoglobulin who presented favorable outcomes.

[Evaluation of the irrigation and drainage capacity of 3 bladder irrigation catheters].

Objectives: To perform a comparative evaluation of three types of continuous bladder irrigation catheters with the aim of determining which of them allows greater irrigation solution inflow and bladder outflow.

Methods: We compared three types of three-way catheters, 22F in caliber, being the material the main difference between them: latex, silicone, or polyvinyl.

Results: The polyvinyl catheter showed significant differences both in inflow and outflow in comparison with the other two types of catheters (p = 0.