Ocular relapse in the anterior chamber in childhood acute lymphoblastic leukemia.

We reviewed 11 cases of ocular relapse in the anterior chamber in children with acute lymphoblastic leukemia (ALL), representing 0.5% of all primary relapses seen at this center. Nine patients had hypopyon, and two had iris involvement only. Concomitant testicular relapse was present in two children and hematologic relapse in one. Ocular relapse occurred at 12 to 74 months (median, 36 months) from the data of initial diagnosis. Children who relapsed after therapy was discontinued did so within 1 year of completing therapy. Topical steroids and systemic chemotherapy were administered to all patients with ocular relapse; four also received radiation to the involved eye (600 to 1,050 cGy). Four children, each with a prolonged initial complete remission, remain free of disease for 15+, 32+, 34+, and 145+ months following anterior chamber relapse; three had received radiation therapy. Five patients died of recurrent leukemia, and two of infection while in remission. Aggressive retreatment appears warranted in cases of anterior chamber relapse of ALL, as some of these children may attain prolonged new remissions.