Asymptomatic Isolated Congenitally Corrected Transposition of the Great Arteries in a 25-Year-Old Male: A Case Report

Congenitally corrected transposition of the great arteries (ccTGA) is a complex cardiac abnormality that represents less than 1% of all congenital heart defects. It is characterized by a unique pathophysiology involving both atrioventricular and ventriculoarterial discordance and may occur with or without cardiac abnormalities such as ventricular septal defects, pulmonary stenosis, or tricuspid valve anomalies. A man in his 20s presented with a 3-week history of mild dyspnea during strenuous activities. The patient was diagnosed with isolated ccTGA based on electrocardiogram and echocardiogram findings. However, as a long-term complication of ccTGA, the patient exhibited mild tricuspid regurgitation, mild mitral regurgitation, and right ventricular hypertrophy. The dyspnea was explained by the failing systemic right ventricle. Despite his cardiac anomaly, the patient leads a normal lifestyle, with ongoing monitoring to ensure optimal management of his condition. ccTGA is even rarer in the absence of additional cardiac abnormalities, and its diagnosis could be delayed due to being asymptomatic. Patients must avoid risk factors and that could potentially aggravate their condition. Regular surveillance is imperative for the early detection of potential complications.