RESUMO
Pulmonary cryptococcal infections occur in both immunocompetent and immunocompromised individuals, with a reported increased incidence of diffuse pulmonary disease in acquired immune deficiency syndrome (AIDS) patients. The authors observed no differences in the radiographic appearances of pulmonary cryptococcal disease between human immunodeficiency virus (HIV) patients and other immunocompromised individuals. Chest computed tomography (CT) contributes to a more comprehensive understanding of pulmonary cryptococcal infections.
Assuntos
Infecções Oportunistas Relacionadas com a AIDS/diagnóstico por imagem , Criptococose/diagnóstico por imagem , Pneumopatias Fúngicas/diagnóstico por imagem , Infecções Oportunistas Relacionadas com a AIDS/imunologia , Centros Médicos Acadêmicos , Adulto , Idoso , Criptococose/imunologia , Criptococose/patologia , Feminino , Humanos , Hospedeiro Imunocomprometido , Pulmão/diagnóstico por imagem , Pneumopatias Fúngicas/imunologia , Pneumopatias Fúngicas/patologia , Masculino , Pessoa de Meia-Idade , Tomografia Computadorizada por Raios X , Imunologia de TransplantesRESUMO
We present a case of constrictive pericarditis resulting in an outpouching of the right ventricular free wall, simulating a right ventricular free wall aneurysm. The present case is, to the best of our knowledge, the first reported right ventricular free wall aneurysm-like outpouching adjacent to surrounding regions of thickened pericardium in a patient with constrictive pericarditis.
Assuntos
Cardiomiopatia Restritiva/diagnóstico , Pericardite Constritiva/diagnóstico , Cardiomiopatia Restritiva/patologia , Diagnóstico Diferencial , Aneurisma Cardíaco/diagnóstico , Ventrículos do Coração/patologia , Humanos , Masculino , Pessoa de Meia-Idade , Pericardite Constritiva/patologia , Pericárdio/patologia , Resultado do TratamentoRESUMO
Two cases are presented in which a pigtail catheter was entrapped by the chordae tendineae of the tricuspid valve during pulmonary arteriography. A technique for removal of the catheter from its entanglement by the chordae tendineae is described. Caution must be taken when advancing through the right ventricle a catheter that appears to be entrapped by the chordae tendineae. When such an entanglement occurs, measures to reduce the risk of rupturing a papillary muscle must be taken.
Assuntos
Angiografia/efeitos adversos , Angiografia/instrumentação , Cateterismo/instrumentação , Cordas Tendinosas , Artéria Pulmonar/diagnóstico por imagem , Valva Tricúspide , Adulto , Feminino , Humanos , Masculino , Pessoa de Meia-IdadeRESUMO
PURPOSE: To determine the usefulness of delayed post-equilibrium-phase contrast material-enhanced images in evaluation of intrahepatic cholangiocarcinoma. MATERIALS AND METHODS: Review of surgical, pathologic, and radiologic records revealed 47 patients with proved cholangiocarcinoma with delayed (6-36 minutes) post-equilibrium-phase contrast-enhanced computed tomographic (CT) scans. Unenhanced, dynamic contrast-enhanced, and delayed images were retrospectively reviewed, and enhancement patterns for cholangiocarcinoma lesions were recorded. Degree of delayed enhancement was compared with that of surrounding liver parenchyma. Patterns of delayed enhancement were characterized as homogeneous or heterogeneous. Enhancement characteristics were correlated with histologic findings. RESULTS: Thirty-five (74%) of 47 patients had tumors with mild or marked hyperattenuating delayed contrast enhancement, of which 18 had tumors with homogeneous hyperattenuating enhancement. In three patients, the only evidence of tumor was on the delayed images. In one patient, the tumor was not definable at any imaging phase. Tumors with delayed enhancement tended to be fibrous; however, degree of contrast material retention did not always correlate with the fibrous content of tumors at histopathologic analysis. CONCLUSION: Delayed tumoral contrast enhancement is a typical feature of intrahepatic cholangiocarcinoma and may aid in the detection and characterization of such lesions at CT.