RESUMO
Accumulation of 99mTc-diphosphonate was observed in 2 of 12 patients with liver metastases who had primary adenocarcinoma of the large bowel. The area of excessive radionuclide concentration corresponded well to the location of the hepatic metastases. The literature on this subject is reviewed and a possible mechanism of radionuclide accumulation is discussed.
Assuntos
Adenocarcinoma/diagnóstico por imagem , Neoplasias do Colo/patologia , Difosfonatos , Neoplasias Hepáticas/secundário , Compostos de Organotecnécio , Tecnécio , Adenocarcinoma/secundário , Humanos , Neoplasias Hepáticas/diagnóstico por imagem , Masculino , Pessoa de Meia-Idade , CintilografiaRESUMO
The authors report on a postirradiation osteosarcoma of the clavicule in a patient treated for thyroid cancer. The total absorbed dose to the right clavicule was estimated 149 Gy (60 Co and 18 MeV elektron beam). The findings are demonstrated on plain radiographs, CT-scan and bone scintigraphy. The literature on this subject is reviewed and the possible pathogenesis discussed.
Assuntos
Adenoma/radioterapia , Neoplasias Ósseas/etiologia , Clavícula , Neoplasias Induzidas por Radiação/etiologia , Osteossarcoma/etiologia , Neoplasias da Glândula Tireoide/radioterapia , Adulto , Neoplasias Ósseas/patologia , Clavícula/patologia , Radioisótopos de Cobalto/efeitos adversos , Feminino , Humanos , Recidiva Local de Neoplasia/radioterapia , Neoplasias Primárias Múltiplas/etiologia , Neoplasias Primárias Múltiplas/patologia , Neoplasias Induzidas por Radiação/patologia , Osteossarcoma/patologia , Teleterapia por Radioisótopo/efeitos adversosRESUMO
18 patients with inflammatory or neoplastic diseases of the skull underwent bone scintigraphy; the scintigraphic and radiologic findings were compared with the extent of the lesion found at surgery. Possible errors and the diagnostic value of this method are discussed.
Assuntos
Ossos Faciais/diagnóstico por imagem , Neoplasias Cranianas/diagnóstico por imagem , Feminino , Humanos , Masculino , Neoplasias Otorrinolaringológicas/diagnóstico por imagem , CintilografiaRESUMO
In an animal experimental model the survival of untreated red blood cells (RBC) tagged with 51Cr was compared with cells processed by an autotransfusion device separating and washing the RBC tagged with 111In. Intraoperative autotransfusion (IAT) was done by the Haemonetics Cell Saver. Additionally the morphology of human RBC was investigated in different stages of IAT by the aid of scanner electron micrographs. The survival of RBC after processing was slightly decreased in comparison to untreated cells. The morphology of autologous RBC is little affected compared with older homologous RBC in erythrocytic concentrates. Cell detritus due to haemolysis is reliably eliminated by microfiltration. Especially regarding survival and morphologic alterations of RBC IAT with a system separating and washing the cells seems to be superior to the transfusion of homologous blood.
