RESUMO
Omental torsion is a rare cause of acute abdomen. The diagnosis is usually not established before surgery, but recently some reports have described the usefulness of computed tomography (CT) for the detection of this condition. We encountered a 58-year-old man with torsion of the greater omentum secondary to right-sided inguinal hernia, and present the characteristic CT findings of a whirl-like mass with hyperattenuated fatty tissue.
Assuntos
Abdome Agudo/etiologia , Omento/diagnóstico por imagem , Doenças Peritoneais/complicações , Humanos , Masculino , Pessoa de Meia-Idade , Doenças Peritoneais/diagnóstico por imagem , Tomografia Computadorizada por Raios X , Anormalidade Torcional/complicações , Anormalidade Torcional/diagnóstico por imagemRESUMO
We encountered unexpected accumulation of thallium-201 in a patient with thalamic dementia resulting from bithalamic venous infarction induced by arteriovenous fistula in the posterior fossa The site and degree of abnormal accumulation varied between early and delayed thallium-201 SPECT images. This unexpected and complicated accumulation of thallium-201 appeared to depend on not only breakdown of the blood-brain barrier but also on the hemodynamics of this type of venous infarction.
Assuntos
Fístula Arteriovenosa/complicações , Fístula Arteriovenosa/diagnóstico por imagem , Infarto Encefálico/complicações , Infarto Encefálico/diagnóstico por imagem , Doenças Talâmicas/diagnóstico por imagem , Doenças Talâmicas/etiologia , Tálio , Idoso , Fístula Arteriovenosa/diagnóstico , Fístula Arteriovenosa/metabolismo , Infarto Encefálico/diagnóstico , Infarto Encefálico/metabolismo , Diagnóstico Diferencial , Feminino , Humanos , Achados Incidentais , Cintilografia , Compostos Radiofarmacêuticos/farmacocinética , Doenças Talâmicas/diagnóstico , Doenças Talâmicas/metabolismo , Tálio/farmacocinéticaRESUMO
Small bowel obstruction due to lesser sac herniation through both the gastrocolic and gastrohepatic omenta is extremely rare, and only a few reported cases have been concerned with imaging diagnosis. CT images showed distended bowel loops at the level of the cephalad part of the stomach, collapsed triangular loops and attached mesentery were depicted just behind the caudal part of the stomach. These findings provided clues to the diagnosis of this type of lesser sac hernia.