Nine patients who presented to our institution with the chief complaint of
a limp and no history of trauma were subsequently diagnosed with leukemia.
A review of these patients identified clinical and laboratory findings that
helped to establish the diagnosis. The presence of an antalgic gait with c
omplaints of pain of variable intensity and duration, an irritable hip or k
nee, a mild to moderate elevation in body temperature, lymphadenopathy, hep
atosplenomegaly, an increased erythrocyte sedimentation rate, thrombocytope
nia, anemia, decreased neutrophils, increased lymphocytes, or blast cells o
n the peripheral blood smear should cause the physician to suspect leukemia
in a limping child. Bone marrow biopsy confirms the diagnosis.