Is a 1.5 cm nodule spiculated lung bad?

Possibly: A 1.5 cm spiculated lung nodule should be further evaluated, especially if the patient is a current / former smoker. Pet scan study might help to determine the metabolic activity of the lesion (higher suv more likely to be a malignancy while lower suv more likely to be benign / reactive). Biopsy may also be indicated. Close radiologic and clinical follow up at very minimum.