[Clinical assessment of granulocyte colony-stimulating factor producing lung cancer].

Objective: The aim of this study was to reveal the clinicopathological feature of granulocyte colony-stimulating factor (G-CSF) producing lung cancer.

Method: Nine cases of G-CSF producing lung cancer from July 2003 to July 2008 were retrospectively evaluated.

Results: All cases were male, 8 cases were poorly differentiated carcinoma. Average of leucocyte and serum G-CSF were 23,378/microl and 128.6 pg/ml respectively. Five cases had febrile symptom, average of serum C-reactive protein (CRP) was 13.37 mg/dl. Immunohistological examination showed positive staining for G-CSF in 6 cases. Serum interleukin-6 (IL-6) level was elevated in 3 cases. Clinical stages were IB in 2, IIB in 2, IIIA in 3 and IIIB in 2 patients. Chemotherapy was performed for patients with stage IIIB. Operation was performed for the other cases. Five cases were died within 12 months, whereas 4 cases are surviving for 6 to 16 months.

Conclusion: Generally, the prognosis of G-CSF producing lung cancer seems to be poor, but in our institute there were 2 cases who lived over 1 year without disease. It is important to establish more effective adjuvant therapy for G-CSF producing tumor.