MAPCAs - Pulmonary Atresia with VSD

Theories on the nature/origin of MAPCAs in Pulmonary Atresia with VSD.

It is speculated that MAPCAs are enlarged bronchila arteries in whom the broncho-pulmonary anastamosis has enlarged.

(First 2 images are from MA Norgaard et al. Eur J Cardio-thorac Surg 2006;29:653-8)

Also see, on this subject:

Surgical outcome

Preop evaluation of PAs

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