The brain is one of the organs often affected by lung cancer. Cancer cells can enter blood vessels or the lymphatic system, travel to the brain, and cross the blood-brain barrier to form secondary tumors. Small cell lung cancer is categorized as either localized or extensive disease. If brain metastasis occurs, the disease is classified as extensive stage.

Small cell lung cancer has a rapid metastatic rate, often detected in advanced or widespread stages. Brain magnetic resonance imaging (MRI) is a crucial assessment step for early detection of brain metastasis, even without symptoms. This ensures accurate staging and monitors disease progression during treatment.

Doctor Son advises a lung cancer patient. *Illustration: Tam Anh General Hospital*

Your treating doctor prescribed a brain MRI to monitor for brain metastasis, providing a comprehensive assessment to develop an appropriate treatment plan. This plan combines local treatment (for the brain) and systemic treatment (for lung cancer). The choice of treatment depends on the disease stage, histopathology, the patient's neurological function, the extent of the primary tumor, and the prognosis.

If brain metastasis is detected early, patients have many opportunities to control the disease with modern methods such as: stereotactic radiosurgery (using high-dose radiation focused precisely on the tumor without incision or surgery), whole-brain radiation, targeted therapy, or immunotherapy. Early detection helps limit severe complications like paralysis and altered consciousness, while also improving quality of life.

Statistics from the Global Cancer Observatory (Globocan) in 2022 show that lung cancer ranks third among common cancers in Vietnam, with approximately 22,560 deaths and 24,430 new cases.

Dr.CKII Ngo Truong Son

Deputy Head of Oncology Department

Tam Anh General Hospital Hanoi