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Bladder carcinoma producing granulocyte colony-stimulating factor: a case report
1Department of Pathology, Tokai University School of Medicine, Kanagawa, Japan.
The Journal of Urology
|April 1, 1993
Summary
Bladder cancer cells produced granulocyte colony-stimulating factor (G-CSF), causing high white blood cell counts in a patient. This paraneoplastic leukocytosis was linked to tumor progression and metastasis.
Area of Science:
- Oncology
- Hematology
- Molecular Biology
Background:
- Paraneoplastic syndromes can manifest with hematological abnormalities.
- Leukocytosis, an elevated white blood cell count, can be associated with malignancy.
Observation:
- A 67-year-old man with recurrent squamous cell bladder carcinoma presented with persistent, severe leukocytosis (up to 50,300/µL).
- The patient experienced progressive metastasis and died within 9 months post-cystectomy.
- Serum analysis revealed significantly elevated granulocyte colony-stimulating factor (G-CSF) levels (4,928 pg/mL).
Findings:
- Immunohistochemistry confirmed G-CSF production by metastatic cancer cells in the liver.
- Northern blot analysis detected G-CSF gene expression in a peritoneal metastatic tumor specimen.
- These findings indicate autonomous G-CSF production by the bladder carcinoma.
Implications:
- Autonomous G-CSF production by bladder cancer can induce paraneoplastic leukocytosis.
- This highlights a potential mechanism linking tumor biology to systemic effects.
- Understanding this pathway may offer insights into cancer-associated inflammation and treatment strategies.