In the case of a compromised lymph node, it should be restricted to that nodes drainage group and not extend to the liver or spleen 8, 10. The most common histological type of GI tract primary lymphomas is marginal zone lymphoma associated with MALT. This represents up to 10% of B lymphomas and up to 50% of gastric lymphomas. MALT lymphomas are followed by diffuse large B cell lymphomas which account for 60% of gastric lymphomas. These may be secondary to the transformation of a marginal zone lymphoma or they may recur. Mantle cell lymphoma or lymphomatous polyposis accounts for up to 30% of primary GI tract lymphomas. Its presentation is different from the previously described lymphomas since it is usually multifocal. Follicular B lymphomas, Burkitt lymphomas, T cell lymphomas associated with enteropathy, and monomorphic CD56+ intestinal lymphomas are much less frequent. Hodgkins lymphoma in the GI tract is very unusual 1-5. Nodal follicular lymphoma FL is one of the most frequent types of non-Hodgkin lymphoma NHL. Most cases of FL are initially detected in the lymph nodes. Visceral compromise is secondary to dissemination from compromised nodal groups. It has an indolent course and therefore is usually diagnosed in advanced stages stages III or IV.
Los tipos histológicos más frecuentes de los linfomas primarios del TGI son el linfoma de la zona marginal asociado a MALT, que representa hasta el 10% de los linfomas B y hasta el 50% de los linfomas gástricos y el linfoma B difuso de célula grande, que corresponde hasta el 60% de los linfomas gástricos, el cual puede ser secundario a la transformación de un linfoma de la zona marginal o presentarse de novo, el linfoma del manto o poliposis linfomatosa que representa hasta 30% de linfomas primarios del TGI y cuya presentación a diferencia de los anteriores suele ser multifocal; con menor frecuencia se presentan los linfomas B folicular y de Burkitt, los linfomas T asociados a enteropatía e intestinal monomórfico CD56+ y excepcionalmente el linfoma de Hodgkin 1-5.