Psychological Distress in Malignant Tumor Patients: Effects on Treatment Adherence, Outcomes, and Quality of Life

This study is looking at how psychological distress (anxiety, depression, emotional difficulties) in cancer patients affects how well they follow their treatment plans, their treatment outcomes, and their quality of life. **You may be eligible if...** - You are 18 years or older - You have been diagnosed with a confirmed malignant tumor (such as liver, stomach, breast, or lung cancer) through imaging or biopsy - You are planning to receive or are currently undergoing cancer treatment such as surgery, chemotherapy, targeted therapy, or other systemic treatments - You are willing to sign an informed consent form **You may NOT be eligible if...** - You have severe heart or brain vascular disease alongside your cancer - You have significant cognitive impairment that prevents you from completing questionnaires - Your clinical records are incomplete or you are unlikely to complete follow-up visits Talk to your doctor to see if this trial is right for you.