C34.01

Clinical Causes: Tobacco smoking, which is the primary risk factor Exposure to secondhand smoke Radon gas exposure Occupational exposure to carcinogens such as asbestos, arsenic, or diesel exhaust Previous history of cancer or genetic predisposition Chronic lung diseases that cause inflammation and cellular changes Radiation therapy to the chest area

Key Symptoms: Persistent cough that may worsen over time Coughing up blood or blood-stained sputum Shortness of breath or wheezing Chest pain or discomfort Recurrent respiratory infections Hoarseness or voice changes Unintentional weight loss Fatigue or weakness

Diagnosis Path: Diagnosing a malignant neoplasm in the right main bronchus involves several steps, including: - Imaging tests such as chest X-ray and computed tomography (CT) scans to identify abnormal growths - Bronchoscopy, which allows direct visualization of the airway and biopsy of suspicious tissue - Tissue biopsy for histopathological examination to confirm malignancy and determine the cancer type - Additional tests like PET scans, MRI, or mediastinoscopy may be used to assess the extent of the disease and check for metastasis - Pulmonary function tests to evaluate lung capacity and function

Treatment Protocols: Management of a malignant neoplasm of the right main bronchus generally includes a multidisciplinary approach tailored to the individual’s condition, tumor stage, and overall health. Common treatment options encompass: - Surgical resection, such as lobectomy or pneumonectomy, to remove the tumor and affected lung tissue - Radiation therapy to target cancer cells and reduce tumor size - Chemotherapy to address cancer that has spread or as adjunctive therapy post-surgery - Targeted therapy and immunotherapy for specific types of lung cancer, especially those with identifiable genetic mutations - Supportive care, including pain management and respiratory support, to improve quality of life - Regular follow-up and imaging to monitor for recurrence or progression