Development of machine learning models to predict gestational diabetes risk in the first half of pregnancy.

BACKGROUND: Early prediction of Gestational Diabetes Mellitus (GDM) risk is of particular importance as it may enable more efficacious interventions and reduce cumulative injury to mother and fetus. The aim of this study is to develop machine learning (ML) models, for the early prediction of GDM using widely available variables, facilitating early intervention, and making possible to apply the prediction models in places where there is no access to more complex examinations. METHODS: The dataset used in this study includes registries from 1,611 pregnancies. Twelve different ML models and their hyperparameters were optimized to achieve early and high prediction performance of GDM. A data augmentation method was used in training to improve prediction results. Three methods were used to select the most relevant variables for GDM prediction. After training, the models ranked with the highest Area under the Receiver Operating Characteristic Curve (AUCROC), were assessed on the validation set. Models with the best results were assessed in the test set as a measure of generalization performance. RESULTS: Our method allows identifying many possible models for various levels of sensitivity and specificity. Four models achieved a high sensitivity of 0.82, a specificity in the range 0.72-0.74, accuracy between 0.73-0.75, and AUCROC of 0.81. These models required between 7 and 12 input variables. Another possible choice could be a model with sensitivity of 0.89 that requires just 5 variables reaching an accuracy of 0.65, a specificity of 0.62, and AUCROC of 0.82. CONCLUSIONS: The principal findings of our study are: Early prediction of GDM within early stages of pregnancy using regular examinations/exams; the development and optimization of twelve different ML models and their hyperparameters to achieve the highest prediction performance; a novel data augmentation method is proposed to allow reaching excellent GDM prediction results with various models.

The trouble with personhood and person-centred care.

The phrase 'person-centred care' (PCC) reminds us that the fundamental philosophical goal of caring for people is to uphold or promote their personhood. However, such an idea has translated into promoting individualist notions of autonomy, empowerment and personal responsibility in the context of consumerism and neoliberalism, which is problematic both conceptually and practically. From a conceptual standpoint, it ignores the fact that humans are social, historical and biographical beings, and instead assumes an essentialist or idealized concept of personhood in which a person is viewed as an individual static object. From a practical standpoint, the application of such a concept of personhood can lead to neglect of a person's fundamental care needs and exacerbate the problems of social inequity, in particular for older people and people with dementia. Therefore, we argue that our understanding of PCC must instead be based on a dynamic concept of personhood that integrates the relevant social, relational, temporal and biographical dimensions. We propose that the correct concept of personhood in PCC is one in which persons are understood as socially embedded, relational and temporally extended subjects rather than merely individual, autonomous, asocial and atemporal objects. We then present a reconceptualization of the fundamental philosophical goal of PCC as promoting selfhood rather than personhood. Such a reconceptualization avoids the problems that beset the concept of personhood and its application in PCC, while also providing a philosophical foundation for the growing body of empirical literature that emphasizes the psychosocial, relational, subjective and biographical dimensions of PCC.

Osteoma Cutis Arising in Common Blue Nevus (Blue Osteonevus): A Clinicopathologic, Immunohistochemical, and Dermoscopic Study.

Osteonevus of Nanta is a rare histopathologic variant of melanocytic nevus that results from ossification of the dermis between dermal nests of melanocytes. Most cases described in the literature have been associated with long-standing intradermal nevi and were often located in the upper part of the body. We report a lesion on the shoulder of an elderly man showing the association of a common blue nevus and osteoma cutis, an exceptional feature which has been previously reported in 2 instances. We also describe for the first time the dermoscopic appearance of this "blue osteonevus."

Cutaneous Elastic Tissue Anomalies.

After a review of the physiology in the formation and degradation of cutaneous elastic tissue, we describe the clinicopathologic disorders characterized by increased and decreased cutaneous elastic tissue. Cutaneous disorders characterized by increased and/or abnormal elastic tissue in the dermis include elastoma, also named nevus elasticus, dermatosis lenticularis disseminata, pseudoxanthoma elasticum, late-onset focal dermal elastosis, linear focal elastosis, elastoderma, elastofibroma dorsi, and elastosis perforans serpiginosa. In some of these conditions, the specific histopathologic diagnosis may be rendered with hematoxylin-eosin stain, whereas in other ones special elastic tissue stains are necessary to demonstrate the anomalies. Cutaneous disorders characterized by decreased dermal elastic tissue include nevus anelasticus, papular elastorrhexis, perifollicular elastolysis, anetoderma cutis laxa, postinflammatory elastolysis and cutis laxa, white fibrous papulosis of the neck, pseudoxanthoma elasticum-like papillary dermal elastolysis, and mid dermal elastolysis. In most of these conditions, the histopathologic anomalies are only seen with elastic tissue stains, and cutaneous biopsies of these processes stained with hematoxylin-eosin show appearance of normal skin. The diagnosis of some of these disorders characterized by increased or decreased elastic dermal tissue should be followed by general exploration of the patient to rule out associated severe systemic anomalies, and in some cases, a genetic counseling should be offered to the family.

Primary dermal pleomorphic liposarcoma: utility of adipophilin and MDM2/CDK4 immunostainings.

Liposarcoma, usually arises in deep soft tissues and pleomorphic liposarcoma (PL), is the rarest histopathologic variant. However, 15 cases of entirely dermal PL have been reported. We describe a case of a 79-year-old man who developed a rapidly growing nodule on his thorax. Excisional biopsy was performed and immunohistochemical studies were carried. The lesion was a well-circumscribed dermal nodule composed of multivacuolated pleomorphic lipoblasts and atypical mitotic figures. Neoplastic cells expressed CD10 and resulted negative S100 protein, Melan-A, MITF-1, AE1/AE3, CD4, CD68 (PGM1), retinoblastoma gene family protein, pericentrine and lysozyme. Adipophilin stain showed the lipid contents in the cytoplasm of the neoplastic cells. MDM2 and CDK4 resulted both negative. A diagnosis of primary dermal PL was made. This case shows the utility of adipophilin immunostaining to prove the lipid contents in neoplastic cells, which has the advantage of using formalin-fixed paraffin-embedded tissue and making needless frozen sections and ultrastructural studies to show these findings. Negative MDM2/CDK4 staining in our case argues against the possibility of dedifferentiated liposarcoma and further supports the diagnosis of true PL.

Suplementación prenatal con omega 3 y su efecto en complicaciones durante el embarazo / Effect of prenatal omega 3 supplementation on pregnancy outcomes

Durante los últimos años se ha incentivado la suplementación con omega 3 durante el embarazo principalmente debido a la evidencia que mostraría beneficios en el desarrollo neuronal y visual del hijo en gestación, y a la prevención de patologías obstétricas asociadas a un aumento de la morbi-mortalidad perinatal. Los ácidos grasos poliinsaturados (PUFAs) omega 3, específicamente el ácido eicosapentaenoico (EPA) y el ácido docosahexaenoico (DHA), poseen propiedades antiinflamatorias, vasodilatadoras, además de propiedades anti-agregantes, las cuales han estimulado el uso de PUFAs en la prevención de enfermedades cardiovasculares. En esta revisión detallamos los efectos de la suplementación con omega 3 en diferentes aspectos del embarazo tales como la prevención del parto prematuro, preeclampsia, depresión post-parto y mejora del metabolismo durante la diabetes gestacional. Si bien existen diversos ensayos clínicos randomizados que estudian la suplementación con omega 3 durante la gestación, la evidencia sigue siendo no concluyente, debido a la variabilidad de las dosis y tiempo de administración. Ciertamente, un mayor número de estudios de calidad son necesarios para determinar el real impacto de la suplementación con omega 3 durante la gestación en la prevención de patologías obstétricas(AU)

During pregnancy, omega 3 supplementation has raised its popularity due to evidence that it would show not only benefits in the neural and visual development of the unborn child, but also in the prevention of obstetrical pathologies associated with of perinatal morbidity and mortality. Omega 3 polyunsaturated fatty acids (PUFAs), specifically, docosahexaenoic acid (DHA) and eicosapentaenoic acid (EPA), possess anti-inflammatory, vasodilatory and anti-aggregating properties, which have led to the use of PUFAs in the prevention of cardiovascular diseases. In this review, we detail the effects of omega 3 supplementation on different aspects of pregnancy such as prevention of preterm birth, pre-eclampsia, postpartum depression, and improved metabolism during gestational diabetes. Although there are several randomized clinical trials using omega-3 supplementation during pregnancy, the evidence remains inconclusive, due to variability in dosage and administration time. Certainly, a greater number of high-quality studies including randomized clinical trials are necessary to determine the impact of omega 3 supplementation during pregnancy in the prevention of obstetric pathologies(AU)

Eccrine porocarcinoma with extensive cutaneous metastases.

BACKGROUND: Eccrine porocarcinoma (EPC) is an uncommon malignant neoplasm that originates in the intraepidermal portion of the eccrine sweat duct. Although porocarcinoma is a slow-growing tumor, up to 20% of cases can metastasize to regional lymph nodes, thus increasing mortality. METHODS: We describe the clinical and histopathological features and clinical course of three cases of extensive metastatic EPC diagnosed in our department over the last 10 years. RESULTS: All three patients were women aged 89-96 years. They had numerous skin tumors on the left leg that were histologically and immunohistochemically diagnosed as metastatic EPC. Only one patient had a history of primary porocarcinoma, which had been excised 6 years earlier. The remaining two patients had a previous lesion diagnosed as squamous cell carcinoma. We treated the patients with palliative radiotherapy and/or chemotherapy. Only one patient is currently alive. CONCLUSIONS: The cases of cutaneous and regional metastatic EPC we present occurred in elderly women with major involvement of the left leg. The third case is noteworthy, as the patient presented a long latency period before metastases appeared. Difficulties in the clinical diagnosis--and occasionally histological diagnosis--of primary EPC could delay more aggressive treatment, although optimal treatment does not always guarantee a good prognosis.

Biological Treatments in Atopic Dermatitis.

Atopic dermatitis (AD) is one of the most common chronic inflammatory skin diseases that affect both children and adults with a prevalence of 30% and 10%, respectively. Even though most of patients respond satisfactory to topical anti-inflammatory drugs, about 10% require one or more systemic treatments to achieve good control of their illness. The progressive and increasingly detailed knowledge in the immunopathogenesis of AD has allowed research on new therapeutic targets with very promising results in the field of biological therapy. In this article, we will review the different biological treatments with a focus on novel drugs. Their mechanism of action, current status and results from clinical trials and observational studies will be specified.

Fracaso de omalizumab en una urticaria solar grave inducida por ultravioleta / Failure of omalizumab in ultraviolet-induced severe solar urticaria

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Paniculitis pancreática poscolangiopancreatografía retrógrada endoscópica / Pancreatic panniculitis post-endoscopic retrograde cholangiopancreatography

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