Browsing by Author "Vasconcelos, V"
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- Cirurgia de Ressecção dos Tumores do Pâncreas Localmente Invasivos. Apresentação de uma Nova Técnica de RevascularizaçãoPublication . Fradique, AC; Azevedo, V; Vasconcelos, V; Pupo, A; Quaresma, L; Carreira, NA cirurgia dos tumores do pâncreas continua a ser marcada pela pobreza dos resultados obtidos. No caso dos tumores localmente invasivos, os doentes são habitualmente sujeitos a uma mera cirurgia de derivação, com escassa sobrevivência e má qualidade de vida. Os autores operaram sete doentes com tumores do pâncreas localmente invasivos, sujeitos a cirurgia de ressecção radical, com bons resultados. É apresentada uma técnica original de reconstrução da circulação arterial hepática.
- Esophageal Cancer: Results of the Trimodal Approach in a Medium-Volume Multidisciplinary UnitPublication . Carrola Gomes, D; Caldeira Fradique, A; Costa, L; Quaresma, L; Gualdino Silva, J; Vasconcelos, V; Sacadura, J; Oliveira, M; Esteves, J; Mateus Marques, R; Fernandez, G; Guedes da Silva
- Gastric MANECs: a Casuistic of a Portuguese CentrePublication . Aguiar, C; Caldeira Fradique, A; Quaresma, L; Matias, R; Gualdino Silva, J; Vasconcelos, V; Sacadura, J; Oliveira, M; Cabrita, F; Mateus Marques, R; Esteves, J; Costa, L; Fernandez, G; Guedes da Silva
- Ki-67 Proliferation Index in Gastric Cancer - Biologic SignificancePublication . Nabais, C; Caldeira Fradique, A; Oliveira, M; Quaresma, L; Gualdino Silva, J; Vasconcelos, V; Sacadura, J; Costa, L; Cabrita, F; Mateus Marques, R; Esteves, J; Fernandez, G; Guedes da SilvaObjectives/Introdution: Ki-67 protein has been used as an indicator of proliferation activity in tumor cells. In gastric cancer the prognostic value has not been fully understood. This study was designed to assess the biologic significance of Ki-67 proliferation index (PI) in gastric cancer. Material/Methods: Seventy-two patients with gastric cancer were evaluated. These patients underwent gastric resection, and the tumor tissue was stained immunohistochemically. Ki-67 PI was defined as the percentage of tumor cells positive for Ki-67. Ki-67 PI was correlated with clinicopathological characteristics and patient survival. Results: A low Ki-67 PI (less than or equal to 50%) was associated with poorly differentiated histology - diffuse type (p=0.009) and signet ring cells (p=0.004) - and younger age (p=0.022). A worse prognosis in patients with low Ki-67 PI was also found (a mean survival of 41.8 vs 63 months for high Ki-67 PI group), but not statistically significant (p=0.623, log rank test). Discussion/Conclusion: We found an inversely correlation between Ki-67 PI and histological differentiation grade. Patients in group with low Ki-67 PI are younger, with poorly differentiated histology and have a lower mean survival. Like other studies already suggested, we may have two different tumors phenotypes - highly invasive with low proliferative capability, and less invasive potential with higher proliferative ability. However, in this sample, no significant prognostic value was achieved between both.
- Neuroendocrine Carcinoma of the Esophagus: Single-Center Experience of 5 CasesPublication . Corado, S; Caldeira Fradique, A; Figueiredo, J; Quaresma, L; Pupo, A; Sacadura, J; Vasconcelos, V; Gualdino Silva, J; Fernandez, G; Costa, L; Mateus Marques, R; Oliveira, M; Esteves, J; Guedes da Silva; Barroso, E
- Ressecções Multiorgânicas na Cirurgia dos Tumores do Colon e RectoPublication . Fradique, AC; Azevedo, V; Vasconcelos, V; Pupo, A; Quaresma, L; Carreira, N; Vicente, POs tumores do cólon e recto com invasão locoregional ou metastizados constituem situações clínicas graves, com escassa esperança de sobrevivência. A cirurgia oncológica radical alargada constitui a única solução potencialmente curativa ou que pode proporcionar sobrevidas mais longas. Foram operados 32 doentes portadores de tumores colo-rectais metastizados ou com invasão locoregional, quer primitivos quer recidivados, tendo sido obtidas sobrevidas até aos sete anos, com boa qualidade de vida.
- Sentinel Lymph Node in Gastric CancerPublication . Quaresma, L; Caldeira Fradique, A; Oliveira, M; Gualdino Silva, J; Vasconcelos, V; Sacadura, J; Mateus Marques, R; Esteves, J; Costa, L; Fernandez, G; Guedes da Silva