RESUMO
Deep venous thrombosis and thromboembolism are significant health risks, with high rates of morbidity and mortality. Chronically ill and hospitalized patients, particularly those with cancer, have a high risk for developing these conditions. Mechanical inferior vena cava (IVC) filtration has been standard care for patients with these conditions in whom anticoagulation therapy is contraindicated or has failed. This article reviews caval filters and the current indications for using mechanical IVC filters, including retrievable versus permanent filters, focusing on their use in treating venous thromboembolism in cancer patients.
Assuntos
Neoplasias/complicações , Neoplasias/cirurgia , Filtros de Veia Cava/estatística & dados numéricos , Filtros de Veia Cava/tendências , Humanos , Morbidade , Neoplasias/patologia , Tromboembolia/complicações , Tromboembolia/mortalidade , Tromboembolia/cirurgia , Trombose Venosa/complicações , Trombose Venosa/mortalidade , Trombose Venosa/cirurgiaAssuntos
Fluordesoxiglucose F18 , Linfonodos/diagnóstico por imagem , Linfoma Difuso de Grandes Células B/diagnóstico por imagem , Pescoço/diagnóstico por imagem , Tomografia por Emissão de Pósitrons/métodos , Neoplasias da Glândula Tireoide/diagnóstico por imagem , Idoso , Feminino , Fluordesoxiglucose F18/farmacocinética , Humanos , Linfonodos/metabolismo , Metástase Linfática , Linfoma Difuso de Grandes Células B/metabolismo , Compostos Radiofarmacêuticos/farmacocinética , Neoplasias da Glândula Tireoide/metabolismoRESUMO
Retroperitoneal malignant peripheral nerve sheath tumor (MPNST), a rare type of neurogenic tumor, was diagnosed in a 14-year-old girl with a history of neurofibromatosis type 1 (NF1). Immunochemistry demonstrated spindle cells positive for S-100 protein. The patient had multiple tumor recurrences and she was evaluated with serial F-18 fluorodeoxyglucose (FDG) positron emission tomography (PET). A tumor in the right iliac wing showed increased FDG uptake on PET. FDG-PET played an important role in therapy planning and subsequent follow up. This case emphasizes the important role FDG-PET could play in the staging, restaging, and posttherapy follow up of MPNST.
Assuntos
Fluordesoxiglucose F18 , Neoplasias de Bainha Neural/diagnóstico por imagem , Neoplasias do Sistema Nervoso Periférico/diagnóstico por imagem , Compostos Radiofarmacêuticos , Neoplasias Retroperitoneais/diagnóstico por imagem , Tomografia Computadorizada de Emissão/métodos , Adolescente , Neoplasias Ósseas/secundário , Feminino , Seguimentos , Humanos , Recidiva Local de Neoplasia/patologia , Neoplasias de Bainha Neural/secundário , Neurofibromatose 1/patologia , Proteínas S100/análiseRESUMO
The authors describe various patterns of F-18 fluorodeoxyglucose (FDG) accumulation in the diaphragm and crura. They present 6 patients in whom incidental diaphragmatic and crural uptake of FDG was observed during positron emission tomography (PET). Hyperventilation is thought to be the potential underlying mechanism of this condition.
