<unk>  is an orphan disease with an estimated incidence of 5 cases per million, but it is likely that<unk>  is under-diagnosed as symptoms are non-specific. Although a cumulative incidence of<unk>  between 0.1% and 9.1% within the first 2 years after a symptomatic PE has been reported, it is currently unclear whether acute symptomatic PE begets<unk> . Routine screening for<unk>  after PE is not recommended because a significant number of<unk>  cases develops in the absence of previous acute symptomatic PE. In addition, approximately 25% of patients with<unk>  do not present with a clinical history of acute PE. The median age of patients at diagnosis is 63 years (there is a wide age range, but paediatric cases are rare), and both genders are equally affected.
Chronic thromboembolic pulmonary hypertension
Pulmonary hypertension
Portopulmonary hypertension
Pulmonary venoocclusive disease
Absent pulmonary valve syndrome
Bilharzial cor pulmonale
Asthma
Lettuce big-vein disease