Browsing by Author "Ladeira, C"
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- Biópsia Hepática Percutânea em Doentes Oncológicos - a Propósito de um Caso ClínicoPublication . Lucas, R; Amaral, P; Ladeira, C; Lourenço, J; Vieira, L; Oliveira Martins, F; Marques, AA biópsia hepática percutânea guiada por imagem é uma ferramenta útil que permite obter um diagnóstico histológico fiável sem necessidade de intervenção cirúrgica. Não é contudo um procedimento isento de complicações. No caso particular dos doentes com contexto oncológico conhecido o diagnóstico e estadiamento preciso é indispensável para seleção da terapêutica adequada. Nestes doentes deve dar-se preferência à caracterização imagiológica, contudo em casos onde permanecem dúvidas pode recorrer-se à biópsia. Neste artigo apresentamos um caso de sementeira tumoral no trajecto da agulha de biópsia hepática percutânea, num doente com diagnóstico recente de neoplasia intra-epitelial do cólon, com múltiplas lesões hepáticas e um nódulo pulmonar, detectados na avaliação imagiológica de estadiamento inicial.
- Colon Stricture after Hemolytic Uremic SyndromePublication . Sacras, ML; Ladeira, C; Pereira, SC; Alves, R
- Cytotoxic and Genotoxic Effects of Environmental Relevant Concentrations of Bisphenol A and Interactions with DoxorubicinPublication . Ramos, C; Ladeira, C; Zeferino, S; Dias, A; Faria, I; Cristovam, E; Gomes, M; Ribeiro, EBisphenol A (BPA) is one of the most widely utilized endocrine disruptors to which humans are exposed, particularity through ingestion. BPA is an aneugenic compound with a putative association to tumorigenesis. Although extensively studied in estrogen responsive cells, information regarding its effects on cells from the upper gastrointestinal tract exposed to free/active forms of BPA is still scarce. Similarly, BPA interactions with other drugs have been neglected, although it has been suggested to have a potential role in doxorubicin (DOX) chemoresistance. This study is intended to assess potential cytotoxic and genotoxic effects of BPA, as well as its interactions with DOX, in Human epithelial type 2 cells (Hep-2) originated from a human laryngeal carcinoma and in a DNA damage responsive cell line, the human lung fibroblasts (MRC-5). Cell viability was analyzed through the resazurin assay. The G protein-coupled estrogen receptor 1 (GPER) expression was visualized by immunodetection. Genotoxicity, namely DNA damage and oxidative DNA damage, were assessed by comet assay and micronuclei induction, and mitotic disruption was evaluated cytologically by fluorescent microscopy with DAPI staining. Cytotoxicity analysis showed that exposure to BPA per se does not affect cellular viability. Nevertheless, the genotoxic analysis showed that BPA induced an increase of DNA damage in the Hep-2 cell line and in oxidative damage in the MRC-5 cell line. An increase of micronuclei was also observed in both cell lines following BPA exposure. BPA and DOX co-exposures suggested that BPA acts as an antagonist of DOX effects in both cell lines. The interaction with DOX appears to be cell type dependent, exhibiting a non-monotonic response curve in MRC-5 cells, a GPER expressing cell line. Our study emphasizes the need for a deeper knowledge of BPA interactions, particularly with chemotherapeutic agents, in the context of risk assessment and public health.
- Duplicação Tubular ColorretalPublication . Morão, S; Ladeira, C; Knoblich, M; Mendes, PP; Alves, R
- Neonatal Acute Compartment Syndrome as First Manifestation of Hematologic Disease: Case ReportPublication . Sacras, ML; Ladeira, C; Carmo, S; Kjöllerström, PHemophilia A, characterized by deficiency of functional plasma clotting factor VIII, is an X-linked disorder. Signs and symptoms depend on factor VIII levels. Severe hemophilia A (factor levels less than 1%) is usually diagnosed in the first two years of life. Pediatric compartment syndrome is most associated with trauma, but infectious and vascular causes must also be considered. We report a case of a newborn who presented with a severe hand hematoma after venous puncture, complicated by compartment syndrome. An isolated prolonged partial thromboplastin time was found, and hemophilia was suspected. Factor VIII levels less than 1% were consistent with severe hemophilia A. The patient received recombinant factor VIII perioperatively. Fasciotomy was performed and the patient was kept on antibiotics until closure.
- Penile Involvement as Initial Manifestation of Henoch-Schönlein PurpuraPublication . Santos, E; Henriques, J; Ladeira, C; Alves, R
- Persistência da Veia Cava Superior Esquerda Associada a Atresia do Esófago - Revisão de 5 CasosPublication . Knoblich, M; Silva, A; Ladeira, C; Carmo, S; Murinello, R; Casella, PObjectivos: A atresia do esófago está associada a uma variedade de malformações congénitas de outros órgãos. A persistência da veia cava superior esquerda e uma das malformações venosas torácicas mais comuns, ocorrendo em 0,3% da população. O objectivo deste estudo é caracterizar a persistência da veia cava superior esquerda nos doentes com atresia do esófago tratados no Hospital Dona Estefânia. Métodos: Estudo retrospectivo dos doentes admitidos por atresia do esófago desde Janeiro 2002 a Dezembro 2013. As seguintes variáveis foram estudadas, considerando, idade gestacional, o peso à nascença, o sexo, tipo de atresia do esófago, ecocardiograma no pré-operatório, malformações associadas, abordagem cirúrgica, eventual ecocardiograma no pós-operatório e angioressonância. Resultados: De um total de 107 doentes, em cinco casos foi diagnosticada persistência da veia cava superior esquerda. Destes, apenas um tinha diagnostico pré-natal. A restante investigação revelou um doente com atresia duodenal e outro com malformação do aparelho urinário, coloboma e malformação bilateral dos pavilhões auriculares. Todos os cinco doentes foram submetidos a toracotomia, esofagoesofagostomia primária após laqueação da fístula traqueo-esofágica e angio-ressonância para caracterizar a malformação vascular. Não houve registo de complicações, quer intra-operatórias quer pós-operatórias. Conclusão: Apesar do estudo pré-operatório, apenas se diagnosticou persistência da veia cava superior esquerda num dos doentes. O diagnóstico é geralmente feito de forma incidental durante a colocação rotineira de catéteres venosos centrais à esquerda. É importante identificar estes doentes e caracterizar o seu padrão de retorno venoso cardíaco, pelo risco de complicações embó1icas paradoxais para o sistema arterial.
- Valentino Syndrome: Case ReportPublication . Sacras, ML; Reino Pires, P; Ladeira, C; Knoblich, M; Pereira, S; Alves, RAbdominal pain is a common complaint in the pediatric emergency department. Perforation of a peptic ulcer is a rare occurrence in children and is a commonly overlooked etiology. This study presents a case of a previously healthy 16-yearold male presenting with right lower quadrant abdominal pain. Physical examination, laboratory test, and ultrasound results were suggestive of acute appendicitis. The laparoscopy results, which showed a normal appendix, and the following clinical findings, led to the diagnosis of a perforated pre-pyloric ulcer. Valentino syndrome occurs when a patient with a perforated ulcer presents with pain in the right lower quadrant, which mimics appendicitis, a far more common condition.