Digital acrometastasis: an unusual first presentation of an occult lung cancer

Abstract

A 57-year-old Caucasian man with a 32 pack-year history of smoking presented to the prime care clinic with a 2-week history of left index finger pain, redness, and swelling after sustaining a minor injury while closing his car door. Physical examination revealed a blackish discoloration of the skin. An X-ray of his left hand showed complete demineralization of the distal phalanx of the left index finger (Figure 1). The pain did not respond to NSAIDS, narcotics, and antibiotics. He subsequently underwent partial amputation of the finger. Pathology from the surgical specimen revealed a "poorly differentiated metastatic small-cell carcinoma" (Figure 2). He denied any dyspnea, cough, fever, night sweats, or loss of weight or appetite. The results of a computerized tomography scan of his thorax (Figure 3), abdomen, and pelvis revealed a large right lower lobe lung mass of 6.2 cm ϫ 4.2 cm adjacent to the right lower lobe bronchus that was consistent with lung cancer associated with pulmonary, hepatic, nodal, and skeletal metastasis. Magnetic resonance imaging of the brain showed multiple metastatic lesions throughout the brain, including the cerebellum. An MRI of the spine showed extensive metastatic lesions involving the thoracic vertebrae, T4-T12, and the lumbar vertebra, L2. Given the extensive metastases and poor prognosis, the patient chose hospice care and palliative services.