RESUMO
We report on two patients presenting with gastrointestinal stromal tumors (GIST). The important tumor size and the marked tissular hypersignal seen on T2-weighted magnetic resonance images (MRI) should be considered as magnetic resonance (MR) features strongly indicating diagnosis of GIST.
Assuntos
Tumores do Estroma Gastrointestinal/diagnóstico , Imageamento por Ressonância Magnética/métodos , Idoso , Idoso de 80 Anos ou mais , Biópsia , Meios de Contraste , Diagnóstico Diferencial , Feminino , Gadolínio DTPA , HumanosRESUMO
In connection with six cases of colorectal lymphomas, including five cases of non-Hodgkin lymphomas (3 primary, 2 secondary), and one case of Hodgkin's disease, the authors review the literature concerning the general features and radiological aspects of these pathologies. The radiological signs observed during barium enemas for non-Hodgkin lymphomas are as follows: a small nodular pattern, frequently with multiple lesions (45.7% of cases), a diffuse or infiltrating pattern (25.4%), a filling defect (22.9%), endo- and exo-luminal images (17.8%), ulcerating patterns (3.4%) and a pure mesenteric form (0.8%). Thus, associated radiological forms are present in 16% of cases. The preferential site is the caecum (52.5% of cases), followed by the rectum (21.2%). Colonic or rectal involvement by Hodgkin's disease is extremely rare. From a radiological viewpoint, the most frequently described pattern in the literature is an infiltrating lesion which may or may not cause stenosis; the most frequent site is the caecum.
Assuntos
Adenocarcinoma/diagnóstico por imagem , Neoplasias do Colo/diagnóstico por imagem , Linfoma/diagnóstico por imagem , Neoplasias Retais/diagnóstico por imagem , Adenocarcinoma/patologia , Idoso , Sulfato de Bário , Neoplasias do Colo/patologia , Neoplasias do Colo/secundário , Feminino , Doença de Hodgkin/diagnóstico por imagem , Humanos , Masculino , Neoplasias Retais/patologia , Neoplasias Retais/secundário , Tomografia Computadorizada por Raios XRESUMO
The association of a drug related hypersensitive vasculitis followed two years later by angio-immunoblastic lymphadenopathy is reported. The hypothesis of a similar pathogenesis of these two conditions is discussed.