Abstract
Colony-stimulating factors (CSFs) are commonly used for the treatment of neutropenia following chemotherapy and for the mobilization of peripheral blood stem cells (PBSC). We recently experienced a rare case of a new onset of psoriasiform eruption by GM-CSF (granulocyte-macrophage colony-stimulating factor) which was exacerbated by G-CSF (granulocyte colony-stimulating factor) in a patient with breast cancer. A 36-year-old woman had received neoadjuvant chemotherapy (cyclophosphamide, epirubicin and 5-fluorouracil), modified radical mastectomy and adjuvant chemotherapy with paclitaxel and mitoxantrone followed by GM-CSF administration for the treatment of locally advanced breast cancer. She had developed a psoriatic skin lesion on face and both upper arms during leukocyte recovery in spite of no previous history of psoriasis. Next, the chemotherapy course was complicated by a flare of mild psoriatic skin lesion, although CSF was changed into G-CSF due to GM-CSF-associated psoriasis. Subsequently, she had had high-dose chemotherapy and autologous peripheral blood stem cell transplantation for consolidation therapy. GM-CSF was administered for the mobilization of PBSC and post-transplant period, but psoriatic skin lesion did not appear. During 6 months after PBSCT, psoriasiform eruption did not appear.
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