RESUMO
Abstract Parkinson's disease is one of the most common neurodegenerative diseases. Clinically, it is characterized by motor symptoms. Parkinson's disease should be differentiated from atypical parkinsonism conditions. Conventional magnetic resonance imaging is the primary imaging method employed in order to facilitate the differential diagnosis, and its role has grown after the development of advanced techniques such as diffusion-weighted imaging. The purpose of this article was to review the role of magnetic resonance imaging in Parkinson's disease and in the differential diagnosis with atypical parkinsonism, emphasizing the diffusion technique.
Resumo A doença de Parkinson é uma das doenças neurodegenerativas mais comuns. Clinicamente, é caracterizada por sintomas motores, devendo ser diferenciada com outras doenças que cursam com parkinsonismo, definidas como parkinsonismo atípico. A ressonância magnética convencional é o principal método de imagem para auxiliar este diagnóstico diferencial e, atualmente, seu papel tem crescido com as técnicas avançadas, como a difusão. O objetivo deste artigo é revisar o papel da ressonância magnética na doença de Parkinson e no diagnóstico diferencial com parkinsonismo atípico, com ênfase na técnica de difusão.
RESUMO
BACKGROUND: The advent of antiretroviral therapy increased the life expectancy of human immunodeficiency virus (HIV)-positive patients and, consequently, the morbidity and mortality due to neoplasms. Plasmablastic lymphoma is one such neoplasm that generally presents with involvement of the oral cavity; cases of extra-oral involvement are rare. CASE REPORT: We report a case of plasmablastic lymphoma in a 46-year-old woman for whom the initial clinical manifestation was a painless perineal tumor accompanied by fecal incontinence. CONCLUSIONS: The possibility of this neoplasm should be considered in patients with HIV/acquired immune deficiency syndrome (HIV/AIDS) because its early diagnosis is essential so that the start of the treatment is not delayed.