An Undiagnosed Shone Complex in a 52-Year-Old Female: A Case Report

Area of Science:

• Cardiology
• Congenital Heart Disease
• Adult Congenital Heart Disease

Background:

• Shone complex (SC) is a rare congenital heart disease characterized by multiple left-sided obstructive anomalies.
• SC typically presents in early childhood, making adult diagnoses uncommon.

Observation:

• A 52-year-old female with a history of hypertension presented with dyspnea and palpitations.
• Investigations revealed severe aortic and mitral stenosis, and aortic coarctation, suggesting an incomplete SC.

Findings:

• The patient was diagnosed with an incomplete Shone complex at 52 years old, a rare late presentation.
• Diagnostic imaging confirmed bicuspid aortic valve with severe stenosis, parachute mitral valve with severe stenosis, and aortic coarctation with collateral circulation.

Implications:

• This case underscores the possibility of late presentations of SC, even in adulthood.
• Highlights the need for early diagnosis and intervention for SC to improve patient outcomes.
• Emphasizes considering incomplete SC in adult patients with complex left-sided obstructive cardiac lesions.