Rituximab therapy in a patient with low grade B-cell lymphoproliferative disease and concomitant acquired angioedema.

Acquired angioedema is often associated with significant morbidity. An underlying lymphatic malignancy, autoimmune disorder, adenocarcinoma, or other malignancy may be present. Screening for these disorders should occur in all patients with acquired angioedema as treatment may result in resolution of angioedema.