RESUMO
A technique of filling calvarial defects using bone dust reinforced with titanium Micro Mesh (Leibinger) was investigated using plain x-ray films and computed tomography (CT) in seven consecutive patients (age range, 7-21 years). The aim of our study was to assess whether, in the presence of the titanium, bone dust harvested with a power burr promotes persistent ossification that is comparable with adjacent bone. The mesh was localized by standard skull plain x-ray films, and orthogonal CT scans were obtained at between 9 and 18 months post-operatively. An ultrahigh-resolution algorithm was used to detect neoossification on either side of the Micro Mesh (1-mm collimation, 330-mA and 120 KV(p) at the center of 400 HU, and window width of 2000 Hu). The mesh induced minimal streak artifact. Virtually no new bone formation was seen. It appears that bone dust was completely reabsorbed in this patient group even in the presence of semi-rigid fixation.
Assuntos
Transplante Ósseo/métodos , Crânio/cirurgia , Telas Cirúrgicas , Titânio , Absorção , Acrocefalossindactilia/cirurgia , Adolescente , Adulto , Algoritmos , Artefatos , Transplante Ósseo/diagnóstico por imagem , Criança , Disostose Craniofacial/cirurgia , Desenho de Equipamento , Osso Frontal/cirurgia , Humanos , Hipertelorismo/cirurgia , Processamento de Imagem Assistida por Computador , Órbita/cirurgia , Osteogênese , Osteotomia/métodos , Intensificação de Imagem Radiográfica , Crânio/anormalidades , Crânio/diagnóstico por imagem , Propriedades de Superfície , Tomografia Computadorizada por Raios XAssuntos
Neoplasias Ósseas/diagnóstico por imagem , Perna (Membro) , Osteossarcoma/secundário , Neoplasias Pleurais/secundário , Adulto , Neoplasias Ósseas/cirurgia , Humanos , Perna (Membro)/cirurgia , Masculino , Osteossarcoma/diagnóstico por imagem , Osteossarcoma/cirurgia , Neoplasias Pleurais/diagnóstico por imagem , Complicações Pós-Operatórias/diagnóstico por imagem , CintilografiaRESUMO
CT and MRI findings in a patient with retrocardiac paraoesophageal omental herniation are presented and the literature reviewed. Characteristic CT features included a bilobed, retrocardiac fatty mass, with branching blood vessels throughout, a midline septum and extension through the diaphragm. MRI confirmed the fatty nature of the bilobed, intrathoracic mass and clearly defined pedicles of fat, from each lobe, extending into the abdomen through the oesophageal hiatus of the diaphragm.
