Clubbing of the fingers has a myriad of causes. It is a well-recognized paraneoplastic phenomenon in nonsmall cell carcinoma of the lung. The pathogenesis is still not fully understood, but it is associated with increased vascularity in the nail beds. The authors present a Tc-99 MDP bone scintigram illustrating clubbing in the hand, a primary lung tumor, as well as the underlying bony abnormality. The case emphasizes the importance of vigorously exploring the nonskeletal components of bone scintigraphy.