Publications by authors named "Margarita Larralde"

Composite hemangioendothelioma (CHE) is a rare locally aggressive vascular neoplasm of intermediate malignancy. We describe a 2-year-old patient diagnosed with this tumor. Careful documentation of patients with CHE is crucial to better define the prognosis and treatment of this entity.

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  • Newborn filiform periungual hyperkeratosis (NFPH) is a condition seen in neonates, but its incidence and prevalence are not well-documented in existing literature, making timely diagnosis important to prevent complications like acute paronychia.
  • A study conducted in Buenos Aires included 100 neonates, primarily males (60%), and found that NFPH appeared as hard, filiform elements mainly in the lateral nail folds, affecting 46% of participants, with a noted prevalence in the right hand.
  • The study reported several cases of erosions due to the condition and two instances of acute paronychia, which responded well to topical antibiotics, underscoring the need for vigilant clinical examination in
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Objetives: Obtain a version to validate it in a population of adults with AD.

Materials And Methods: 1) Translation into Spanish and cross-cultural adaptation of the questionnaire from the original version in English, through a seven-step process. 2) Evaluation of the unidimensionality of the resulting scale by means of an exploratory factor analysis (EFA), of its reliability by means of Cronbach's alpha coefficient, and of its validity by evaluating the correlation of its score with those of the POEM and DLQI questionnaires.

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Tinea capitis is a dermatophytosis, which is more common in children. It is caused by dermatophytes that vary according to the region; the most frequently isolated dermatophyte in our setting is Microsporum canis. Given its anthropophilic nature, its dissemination via interpersonal transmission and through the use of hair care tools is very common.

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Background: Idiopathic aseptic facial granuloma (IAFG) is an underrecognized pediatric skin disease, currently considered within the spectrum of rosacea. It usually manifests as a solitary, reddish, asymptomatic nodule on the cheek that resolves spontaneously.

Methods: Retrospective and descriptive observational study of 43 pediatric patients with a clinical diagnosis of IAFG, followed between 2004 and 2022, at two general hospitals in Argentina.

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Introduction: in one third of patients with psoriasis, symptoms start during childhood and adolescence, with a strong emotional and psychosocial impact.

Objective: to develop a guideline for the systemic treatment of psoriasis in pediatric patients by means of recommendations based on the best available evidence.

Materials And Methods: Sources: articles indexed in PubMed, Epistemonikos, Google Scholar, Cochrane Library and Scielo, published between January 2010 and May 2022, in English, Spanish and Portuguese.

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  • Happle-Tinschert syndrome is a rare genetic skin condition caused by a mutation in the SMO gene that occurs after fertilization.
  • Key symptoms include skin growths (hamartomas), abnormal hair growth, and skin color changes that follow specific lines on the body, along with potential issues in bones, teeth, and brain.
  • The report details three new cases of the syndrome, highlighting new skin features and noting that two cases did not show the typical skin growths associated with the condition.
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Background: Atopic dermatitis (AD) is a chronic, recurrent, inflammatory skin condition that is associated with detrimental effects on the lives of patients and their families, including an impact on quality of life (QOL). Studies about QOL on Latin American AD patients are scarce and have generally included few patients.

Objective: describing AD impact on the QOL in a large cohort in Argentina.

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Infantile hemangiomas (IHs) are the most common benign tumors of childhood, and segmental ones are rare and associated with a poor prognosis. While these tumors look harmless, one of their main related complications is ulceration during tumor growth. The management in these cases is extremely challenging, requiring a combination of multiple approaches, some specifically aimed at preventing the proliferation of the hemangioma and others aimed at wound care, pain management, and prevention of further infection.

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Tinea capitis (TC) is a superficial mycosis of the scalp, considered one of the most common dermatophyte infections in children. Until now, the species mainly described in our environment are Microsporum and secondly Trichophyton, which are contracted mainly by direct contact with infected animals or humans, respectively. We present the case of an 8-year-old patient with alopecia and inflammatory lesions of 2 years of evolution, finally reaching the diagnosis of inflammatory tinea capitis caused by T.

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Importance: Ichthyoses are clinically and genetically heterogeneous disorders characterized by scaly skin. Despite decades of investigation identifying pathogenic variants in more than 50 genes, clear genotype-phenotype associations have been difficult to establish.

Objective: To expand the genotypic and phenotypic spectra of ichthyosis and delineate genotype-phenotype associations.

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  • Dermatological emergencies account for 15% of emergency department consultations, with variations in prevalence between public (10.6%) and private (22.5%) health segments.
  • The main reasons for these consultations include infectious diseases (35.5%), allergies (29.6%), and neoplastic conditions (8.6%), with a very small percentage leading to hospitalization (0.7%).
  • A significant discrepancy in diagnosis accuracy was noted; 80.7% of patients evaluated by dermatologists had consistent diagnoses, compared to only 52.6% when seen by non-dermatologist physicians, highlighting the need for specialized dermatology care in emergencies.
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CARD14-associated papulosquamous eruption (CAPE) is a proposed term that encompasses features ranging from psoriasis to pityriasis rubra pilaris (PRP) in association with CARD14 mutations. The early onset of the disease, prominent facial involvement, family history of an autosomal dominant trait, and poor response to conventional treatment are characteristics of CAPE that distinguish it from classical psoriasis and PRP. We describe the clinical features, family history, and response to therapy in three unrelated children with CAPE and compare these characteristics with those of previously described pediatric patients.

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Trichophyton benhamiae is a zoonotic dermatophyte that can cause tinea corporis, tinea faciei and tinea capitis, producing inflammatory lesions, especially in children. In this publication, we describe 7clinical cases of pediatric patients that occurred in our institution between July 2019 and January 2020. All patients underwent a conventional mycological study.

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Most monogenic disorders have a primary clinical presentation. Inherited ISG15 deficiency, however, has manifested with two distinct presentations to date: susceptibility to mycobacterial disease and intracranial calcifications from hypomorphic interferon-II (IFN-II) production and excessive IFN-I response, respectively. Accordingly, these patients were managed for their infectious and neurologic complications.

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Psoriasis is a chronic, multifactorial inflammatory disease; its clinical severity can vary widely. Treatment of severe cases during pregnancy is of special interest. To date there is scarce information available and most data comes from other medical specialties that use similar treatments.

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Congenital candidiasis infection often presents as a skin rash with variable involvement of nails and mucous membranes. Isolated nail involvement is rare, may present late, and can often be managed with topical antifungal medication. We report a case of congenital candidiasis limited to the fingernails that resolved completely within 3 months with topical treatment.

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Parvovirus B19 is a DNA virus of the Parvoviridae family. We present four children with unusual exanthems associated with parvovirus infection: a purpuric periflexural pattern, a purpuric vasculitic pattern, and a combination of the two.

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