Summary

Cancer is a group of diseases with uncontrolled_cell_growth forming malignant_tumors and potential metastasis. Major types: carcinoma_sarcoma_leukemia_lymphoma. Key risk_factors include age, tobacco, alcohol, UV exposure, infections, and inherited variants. Prevention and screening help find disease early. Common warning_signs: unexplained weight loss, fatigue, pain, persistent lumps, abnormal bleeding, skin or bowel changes. Core treatment_modalities: surgery, radiation, chemotherapy, targeted therapy, immunotherapy, hormone therapy. Nursing roles include patient_education, symptom_monitoring, and safety_precautions during care.