RESUMO
Magnetic resonance urography (MRU) can be performed on the basis of two different imaging strategies: static-fluid MRU, based on heavily T2 weighted turbo spin echo (TSE) sequences, and gadolinium-enhanced excretory MRU. Both MR urographic techniques in combination with standard MRI permit a comprehensive examination of the entire urinary tract. This pictorial review illustrates the MRU features of the a wide spectrum of pathological conditions affecting the urinary tract.
Assuntos
Imageamento por Ressonância Magnética/métodos , Sistema Urinário/anormalidades , Doenças Urológicas/diagnóstico , Humanos , Cuidados Pós-Operatórios , Derivação UrináriaRESUMO
The authors report a case of cystic choroid plexus papilloma that originated in the posterior fossa. No connection with the ventricular system was found intraoperatively. Magnetic resonance (MR) and computerized tomography imaging did not furnish a diagnosis, but findings of pathological examinations were consistent with those of choroid plexus papilloma. The authors describe the different appearances of the tumor on MR images and discuss the differential diagnosis with other tumors of the posterior fossa.
Assuntos
Neoplasias do Plexo Corióideo/diagnóstico , Hemangioblastoma/diagnóstico , Papiloma do Plexo Corióideo/diagnóstico , Fossa Craniana Posterior , Líquido Cístico/química , Diagnóstico Diferencial , Humanos , Queratinas/análise , Imageamento por Ressonância Magnética , Masculino , Pessoa de Meia-Idade , Papiloma do Plexo Corióideo/patologia , Papiloma do Plexo Corióideo/cirurgia , Proteínas S100/análise , Tomografia Computadorizada por Raios XRESUMO
A case of acute gangrenous appendicitis with perforation caused by metastatic small cell carcinoma of the lung in a 65 year old man is reported. The manifestation of appendicitis occurred more than 4 years after the diagnosis of the bronchogenic carcinoma. With longer survival of patients with disseminated tumors it is probable that new manifestations of those malignancies will be discovered. Acute appendicitis due to metastasis from a distant neoplasm should be considered in the differential diagnosis of right lower abdominal pain in the oncology patient.
