Objective: A clinical case of a 67-year-old male incidentally diagnosed with left intrathoracic kidney during the study of abdominal pain. Methods: A literature review about de incidence, origins, clinics and diagnosis of this kind of ectopic kidney was made. Results: A thoracoabdominal CAT scan with contrast revealed an ectopic intrathoracic kidney with a left diaphragmatic hernia. Conclusion: Ectopic intrathoracic kidney is a quite infrequent finding; it is usually asymptomatic, diagnosed incidentally and it generally does not require any treatment.