Final answer:
The management involves a biopsy of the lung lesion to determine if it's metastatic melanoma, followed by a possible combination of systemic therapy, surgical resection, or radiation therapy, coordinated by a multidisciplinary team.
Step-by-step explanation:
The management of a newly diagnosed malignant melanoma with a Clark II lesion and a new lung lesion on a chest X-ray (CXR) requires a multidisciplinary approach. Initially, a biopsy of the lung lesion is important to see if it represents a metastasis from the melanoma or a separate primary malignancy. If the lung lesion is confirmed to be metastatic melanoma, the patient may require systemic therapy, which could include immunotherapy, targeted therapy, or chemotherapy. In some cases, surgical resection or radiation therapy might also be considered, depending on the lesion's size, location, and the overall health of the patient. Coordination with a team including oncologists, surgeons, radiologists, and palliative care specialists is essential for comprehensive management.