Pseudotumor cerebri, an uncommon complication following BMT, has been gener
ally associated with cyclosporin A neurotoxicity. However, it has not previ
ously been reported as a clinical presentation of sinusitis in spite of its
high incidence after BMT We report a case of pseudotumor cerebri secondary
to sinusitis in a child with acute lymphoblastic leukemia and who underwen
t unrelated bone marrow transplantation.