Radiolabelled Nectin-4 Targeted LMW Probe PET/CT in Patients With Lung Lesions

This study is testing a new type of PET/CT imaging scan using a radioactive tracer that targets a protein called Nectin-4, which is found on certain tumors. Researchers hope to use this scan to better identify and stage lung lesions (suspicious spots in the lungs). **You may be eligible if...** - You are 18–75 years old - You have at least one measurable tumor or lesion - Your doctor has recommended a PET/CT scan for cancer staging or diagnosis - You have normal heart function - You are expected to survive at least 12 weeks **You may NOT be eligible if...** - You have serious liver abnormalities - You are pregnant or of childbearing age and unwilling to use contraception - You are unable to follow study procedures Talk to your doctor to see if this trial is right for you.