The bone scan appearance of hypertrophic pulmonary osteoarthropathy (HPO) in patients with pulmonary neoplasms and a variety of other lesions has been described by several investigators. It is well known that after therapy, the bone scan changes resolve. This report deals with a patient who had no therapy for a pulmonary neoplasm. In a study done three months later, changes in his initial bone scan that had suggested pulmonary osteoarthropathy had resolved completely, even though the patient had no treatment for his carcinoma.
From the Departments of Nuclear Medicine, Veterans Administration Hospital and Wilmington Medical Center, Wilmington, Delaware