Assuntos
Anemia , Leucopenia , Trombocitopenia , Gravidez , Feminino , Humanos , Esplenomegalia/etiologia , Trombocitopenia/diagnóstico , EsplenectomiaRESUMO
Pyloric gland-type adenoma of the duodenum with documented malignant progression is rare. A case is presented of an 87-year-old man with bloating and nausea, who on investigation was found to have a polyp on the anteroinferior wall of the duodenal cap. Histologic examination of the polyp showed features of a pyloric gland adenoma (PGA) demonstrating the full spectrum of progression from low- to high-grade dysplasia and finally invasive adenocarcinoma. The carcinoma showed gastric-type differentiation highlighted by its mucin immunohistochemistry profile and was of advanced stage with lymph node metastasis. The literature on PGAs and the little documentations on progression to carcinoma in duodenal PGAs are reviewed.
Assuntos
Adenocarcinoma/patologia , Adenoma/patologia , Neoplasias Duodenais/patologia , Mucosa Gástrica , Neoplasias Primárias Múltiplas/patologia , Neoplasias Gástricas/patologia , Idoso de 80 Anos ou mais , Humanos , MasculinoAssuntos
Neoplasias Ósseas/diagnóstico , Leiomiossarcoma/diagnóstico , Actinas/metabolismo , Adulto , Biomarcadores Tumorais/metabolismo , Neoplasias Ósseas/metabolismo , Neoplasias Ósseas/terapia , Diagnóstico Diferencial , Feminino , Fêmur/patologia , Fêmur/cirurgia , Fibrossarcoma/diagnóstico , Humanos , Articulação do Joelho/patologia , Articulação do Joelho/cirurgia , Leiomioma/diagnóstico , Leiomiossarcoma/metabolismo , Leiomiossarcoma/secundário , Leiomiossarcoma/terapia , Imageamento por Ressonância Magnética , Músculo Liso/ultraestrutura , Terapia Neoadjuvante , Osteossarcoma/diagnóstico , Neoplasias de Tecidos Moles/diagnósticoAssuntos
Adenocarcinoma/secundário , Neoplasias Ovarianas/patologia , Neoplasias Ovarianas/secundário , Neoplasias do Colo do Útero/patologia , Adenocarcinoma/diagnóstico , Adenocarcinoma/genética , Adenocarcinoma/virologia , Adulto , Diagnóstico Diferencial , Feminino , Papillomavirus Humano 16/genética , Papillomavirus Humano 18/genética , Humanos , Neoplasias Ovarianas/diagnóstico , Neoplasias Ovarianas/genética , Neoplasias Ovarianas/virologia , Ovário/patologia , Reação em Cadeia da Polimerase , Neoplasias do Colo do Útero/diagnóstico , Neoplasias do Colo do Útero/genética , Neoplasias do Colo do Útero/virologiaRESUMO
Non-volatile memory devices based on silicon nanocrystal synthesized with very low energy Si+ implantation are fabricated. Memory performance under various programming mechanisms including Fowler-Nordheim (FN), drain-bias channel-hot-electron (DCHE), and source-bias channel-hot-electron (SCHE) has been investigated. It is observed that the DCHE yields the largest memory window among the three programming mechanisms. The DCHE and SCHE have similar endurance characteristics, but the SCHE has a longer retention time than the DCHE. Both the DCHE and SCHE have a larger memory window, a better endurance and a longer retention time as compared to the FN. Explanations to the phenomena are given.
