Patient presents with symptoms suggestive of lung metastasis, including persistent cough, dyspnea, hemoptysis, and chest pain.  Review of systems reveals fatigue, weight loss, and decreased appetite.  Physical examination may demonstrate diminished breath sounds, pleural effusion, or lymphadenopathy.  Imaging studies, including chest X-ray, CT scan of the chest, andor PET scan, reveal pulmonary nodules or masses consistent with metastatic disease.  The patient's medical history includes [Primary cancer site, e.g., breast cancer, colorectal cancer, melanoma].  Biopsy of the pulmonary lesion confirms metastatic [Primary cancer type] to the lung.  Differential diagnosis includes primary lung cancer, benign pulmonary nodules, and infectious processes.  The diagnosis of lung metastasis is based on imaging findings, histopathological confirmation, and the patient's known primary malignancy.  Staging workup is performed to assess the extent of metastatic disease.  Treatment options for lung metastasis are discussed with the patient, including systemic chemotherapy, targeted therapy, immunotherapy, radiation therapy, and palliative care.  The treatment plan is tailored to the patient's overall health status, performance status, and the specific primary cancer type.  Referral to oncology, pulmonology, and palliative care specialists is made as appropriate.  Patient education regarding prognosis, potential complications, and supportive care measures is provided.  Follow-up appointments are scheduled for monitoring treatment response and managing symptoms.