We experienced a patient who presented with lung abscess one month after aspirating barium during a gastric cancer screening examination. The patient had no subjective symptoms suggesting a swallowing disorder. Rigorous history taking under suspicion of aspiration and a further assessment of the cause of aspiration revealed hypopharyngeal cancer. Lung abscess and hypopharyngeal cancer, both treatable but potentially fatal conditions, were not diagnosed until one month after the aspiration. This highlights the need for guidance for patients and physicians to follow in the event of barium aspiration, as it is the most common complication of a barium examination. A health checkup for one condition (gastric cancer) may also be an opportunity to diagnose another underlying condition.
Keywords: aspiration pneumonia; dysphagia; gastric cancer; pharyngeal cancer; swallowing disorder.