The 5q - chromosome in a case of erythroid hypoplasia.

A case of erythroid hypoplasia with refractory anemia and an interstitial deletion of the long arm of one chromosome No. 5 is described. This 5q- anomaly has been previously described in cases of refractory anemia with erythroid hypoplasia or hyperplasia, and acute myelogenous leukemia. The relationship between the 5q- chromosome and associated clinical features is discussed together with evidence against a geographical localization.