A patient had a preleukemic syndrome in which the major manifestation was a chronic relapsing fever over an 18-month period. A review of the literature shows that fever may be present in a considerable number of patients with preleukemia.
(JAMA 236:1266-1268, 1976)
Zanger B, Dorsey HN. Fever—A Manifestation of Preleukemia. JAMA. 1976;236(11):1266–1268. doi:10.1001/jama.1976.03270120042024