[Pulmonary sequestration in Iceland - two case reports].

Pulmonary sequestration (PS) is a rare disease where non-functioning lung tissue is separated from the normal bronchopulmonary tree and vasularized by an aberrant systemic artery. The origin of PS is not fully understood. Here we describe two unique cases of PS that support the hypothesis that PS is a congenital malformation rather than an acquired one. These are also the first Icelandic cases of PS reported.