[Nodular lymphoid hyperplasia of the duodenum: study of 3 cases].

We have studied three cases of patients with lymphoid nodular duodenal hyperplasia, two of them being in the child group. We observed giardiasis in one of the cases of this child group. Also vague dyspeptical complaints in all cases were noticed. The diagnostics were based on the results obtained with endoscopy, later confirmed by hystological tests. We found two cases with absence of IgA without alterations in IgG and IgM when using immunoeletrophoresis.