15th September 2020

A 50-year-old female presents with shortness of breath on exertion over the past 3 months

A 50-year-old female presents with shortness of breath on exertion over the past 3 months. This has been progressively worsening over time. She has otherwise been usually fit and healthy and does not smoke. She describes some fatigue but denies any haemoptysis or weight loss. You refer her for a chest X-ray which showed no obvious abnormality. An echocardiogram was arranged, which showed mild right ventricular hypertrophy.

For the patient above, please select the SINGLE most likely diagnosis. Select ONE option from the list above.