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Browsing by Author "Mihon, C"

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  • Abcesso Hepático Amebiano. A Propósito de um Caso Clínico
    Publication . Valente, M; Acúrcio, L; Estrada, H; Mihon, C; Neves, D; Margarido, E; Teixeira, H
    A amebíase é uma das doenças parasitárias mais comuns no mundo. As principais formas invasivas da doença são a colite amebiana e o abcesso hepático. Apresenta-se o caso clínico de um homem de 42 anos admitido com um quadro agudo de febre elevada e dor abdominal no hipocôndrio direito com dois dias de evolução. A tomografia axial computorizada do abdómen revelou a presença de 3 lesões abcedadas a nível do lobo direito do fígado. Tratando-se de um doente residente em área endémica de amebiase colocou-se o diagnóstico diferencial entre abcesso amebiano hepático versus abcesso piogénico, situações com abordagem terapêutica distinta. O quadro clínico e a serologia positiva para Entamoeba histolytica confirmaram o diagnóstico de abcesso amebiano hepático. Os autores apresentam uma breve revisão desta entidade, rara nos países desenvolvidos, que no adequado contexto epidemiológico deve ser considerada no diagnóstico diferencial dos abcessos hepáticos.
    2013Journal article Open access Show more
  • Absolute Hyperglycemia versus Stress Hyperglycemia Ratio for the Prognosis of Hospitalized Patients with COVID-19 in the First Months of the Pandemic: A Retrospective Study
    Publication . Matias, AA; Manique, I; Sabino, T; Rego, T; Mihon, C; Panarra, A; Rizzo, M; Silva-Nunes, J
    Diabetes is a risk factor for greater severity of coronavirus disease 2019 (COVID-19). The stress hyperglycemia ratio (SHR) is an independent predictor of critical illness, and it is reported to have a stronger association than absolute hyperglycemia. The aim of this study was to assess the relationship of absolute hyperglycemia and SHR with the severity of COVID-19, since there are no studies investigating SHR in patients with COVID-19. We conducted a retrospective observational study on hospitalized patients with COVID-19 in the first months of the pandemic, regarding absolute hyperglycemia, SHR, and severity outcomes. Of the 374 patients, 28.1% had a previous diagnosis of type 2 diabetes. Absolute hyperglycemia (64.8% versus 22.7%; p < 0.01) and SHR [1.1 (IQR 0.9-1.3) versus 1.0 (IQR 0.9-1.2); p < 0.001] showed a statistically significant association with previous diabetes. Absolute hyperglycemia showed a significant association with clinical severity of COVID-19 (79.0% versus 62.7%; p < 0.001), need for oxygen therapy (74.8% versus 54.4%; p < 0.001), invasive mechanical ventilation (28.6% versus 11.6%; p < 0.001), and intensive care unit (30.3% versus 14.9%; p = 0.002), but not with mortality; by contrast, there was no statistically significant association between SHR and all these parameters. Our results are in agreement with the literature regarding the impact of absolute hyperglycemia on COVID-19 severity outcomes, while SHR was not a significant marker. We therefore suggest that SHR should not be evaluated in all patients admitted in the hospital for COVID-19, and we encourage the standard measures at admission of blood glucose and HbA1c levels.
    2022Journal article Open access Show more
  • Systemic Mastocytosis - a Diagnostic Challenge
    Publication . Lladó, AC; Mihon, C; Silva, M; Galzerano, A
    Mastocytosis refers to a group of disorders characterized by the infiltration of clonally derived mast cells to the skin or extracutaneous tissues resulting in a heterogeneous clinical picture. It is a rare hematologic disorder in all its forms. The exact incidence is unknown; it affects patients of any age and males and females equally. Its molecular pathogenesis is incompletely understood. The clinical features of mastocytosis result from both chronic and episodic mast cell mediator release, signs and symptoms arising from diffuse or focal tissue infiltration, and, occasionally, the presence of an associated non-mast cell clonal hematologic disease. The histopathologic analysis is essential for definitive diagnosis but there is no curative treatment. The authors report a clinical case of a 72-year-old woman with no history of allergies, with bicytopenia, weight loss, and diffuse axial osteolytic lesions. This is a rare clinical case of aggressive systemic mastocytosis for which palliative treatment can improve survival and quality of life. A brief review of the literature about this pathology is also included.
    2014Journal article Open access Show more