Lung cancer is the leading cause of cancer-related deaths for both men and women in Viet Nam. In 2022, Globocan recorded over 24,400 new cases and nearly 22,600 deaths from the disease in Viet Nam.

Quitting smoking was a crucial decision, as tobacco is the primary cause of lung cancer. Approximately 85% of lung cancer cases are linked to smoking. After ten years of smoking cessation, your risk of developing lung cancer significantly decreases compared to active smokers. However, this risk does not vanish entirely and remains higher than for individuals who have never smoked.

According to recommendations from the US Preventive Services Task Force, individuals aged 50 to 80 with a smoking history of one pack per day for 20 years or two packs per day for ten years (either current smokers or those who quit within the last 15 years) should undergo annual lung cancer screening using low-dose computed tomography (LDCT).

Based on your description, you smoked 18 to 20 cigarettes daily, which equates to an average of one pack per day for 20 years. Therefore, even after quitting smoking for five years, you still fall into the category requiring regular lung cancer screening with LDCT.

The Somatom Force VB30 CT machine performs low-dose computed tomography for lung cancer screening. Photo: Tam Anh General Hospital

The US Preventive Services Task Force also advises that regular lung cancer screening can cease for individuals who have reached 81 years of age or have not smoked for 15 years. Furthermore, those with an active infection, poor health preventing screening, or another serious medical condition should consult their doctor for an appropriate screening plan.

If a low-dose CT scan reveals abnormal findings, your doctor will recommend further diagnostic tests for an accurate diagnosis. Should you experience unusual symptoms such as persistent cough, shortness of breath, or chest pain, consult a respiratory specialist to determine the specific cause.

Doctor Phan Thi Anh Thu

Department of Respiratory Medicine

Tam Anh General Hospital Ha Noi