RESUMEN
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.
Asunto(s)
Tumores del Estroma Gastrointestinal/diagnóstico , Imagen por Resonancia Magnética/métodos , Anciano , Anciano de 80 o más Años , Biopsia , Medios de Contraste , Diagnóstico Diferencial , Femenino , Gadolinio DTPA , HumanosRESUMEN
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.
Asunto(s)
Adenocarcinoma/diagnóstico por imagen , Neoplasias del Colon/diagnóstico por imagen , Linfoma/diagnóstico por imagen , Neoplasias del Recto/diagnóstico por imagen , Adenocarcinoma/patología , Anciano , Sulfato de Bario , Neoplasias del Colon/patología , Neoplasias del Colon/secundario , Femenino , Enfermedad de Hodgkin/diagnóstico por imagen , Humanos , Masculino , Neoplasias del Recto/patología , Neoplasias del Recto/secundario , Tomografía Computarizada por Rayos XRESUMEN
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.