Seven children, six boys and a girl, aged from 2 to 15 years with prov
en myelofibrosis are reported. The clinical presentation in each of th
em was more or less similar with weight loss, moderate or low-grade fe
ver, and abdominal distension with pain or discomfort for some months.
They had hepatosplenomegaly. The spleens, enlarged to more than 6 cm
below the costal margin, were smooth, firm and not tender. There was a
variable degree of generalized lymphadenopathy. They were diagnosed a
s myelofibrosis associated with tuberculosis. The clinical response to
anti-tuberculous chemotherapy was remarkable. Extensive search should
be made for evidence of tuberculosis in children presenting with myel
ofibrosis.