Capillary leak syndrome during low dose granulocyte-macrophage colony-stimulating factor (rh GM-CSF) treatment of a patient in a continuous febrile state

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Abstract
A 20 years old man with peripheral primitive neuroectodermal tumor involving the bone marrow received 12 Gy fractionated total body irradiation, 140 mg/m2 melphalan, 1800 mg/m2 etoposide, and 1500 mg/m2 carboplatin for consolidation of first remission. Thereafter, 250µg/m2/day recombinant human granulocyte-macrophage colony-stimulating factor (rh GM-CSF) (Behring Werke) were administered as continuous infusion 4 days after infusion of autologous bone marrow and peripheral stem cells to accelerate granulocyte reconstitution for control of a continued febrile state. The clinical picture of capillary leak syndrome developed with weight gain, pleural effusions and peripheral edema. The patient's condition stabilized after discontinuation of rh GM-CSF. Eight days later he died of invasive aspergillosis. The clinical course of our patient suggests a potentially fatal toxic effect of rh GM-CSF, even in low dose, in the setting of septicemia or fungemia.

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