Most cases of Morgagni hernia are asymptomatic and diagnosed incidentally on routine chest x-ray film, but they may occasionally become symptomatic. Symptomatic Morgagni hernias may present in many different ways, making the diagnosis challenging. We describe a patient with a Morgagni hernia, resulting in intractable nausea and vomiting, give a brief review of symptoms, note the different types of abdominal contents herniated, and describe the methods used to make the diagnosis.