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Brain metastasis from colorectal cancer
Hisashi Onodera1, Satoshi Nagayama, Tsuyoshi Tachibana
1Department of Surgery and Surgical Basic Science, Graduate School of Medicine, Kyoto University, Kyoto, Japan. onohisa@kuhp.kyoto-u.ac.jp
International Journal of Colorectal Disease
|August 17, 2004
Summary
Neural cell adhesion molecule (NCAM) expression was higher in colorectal cancer brain metastasis patients. Radiosurgery improved survival, suggesting organ affinity and targeted therapy are key for metastasis management.
Area of Science:
- Oncology
- Neuroscience
- Cancer Metastasis Research
Background:
- Brain metastasis from colorectal cancer (CRC) lacks a clear understanding of its underlying mechanisms.
- The role of specific molecular interactions, such as cancer cell affinity for neural tissues, is hypothesized to be involved.
Purpose of the Study:
- To investigate the expression of neural cell adhesion molecule (NCAM) in CRC brain metastasis.
- To analyze the impact of therapeutic parameters on patient outcomes.
Main Methods:
- Retrospective analysis of 17 CRC patients with brain metastasis.
- Histochemical staining for NCAM in primary tumors and comparison with control groups (Dukes C and D).
- Evaluation of survival data based on treatment modalities: radiosurgery, whole brain radiation, or no treatment.
Main Results:
- Significantly higher NCAM expression was observed in primary tumors of brain metastasis patients compared to control groups (p = 0.0004).
- Patients treated with radiosurgery demonstrated longer survival durations than those receiving whole brain radiation or no treatment.
Conclusions:
- Elevated NCAM expression in primary tumors suggests a role for cancer cell organ affinity in circulation-mediated metastasis.
- Radiosurgery for local tumor control appears crucial for enhancing survival and improving quality of life in CRC brain metastasis patients.