Bronchogenic Cyst Associated with Intralobar Pulmonary Sequestration Presenting as a Chimeric Mass

Bronchopulmonary anomalies are rare and vary in clinical presentation, with bronchogenic cysts (BC) and pulmonary sequestration (PS) the most common in adults. BC are usually separated from the tracheobronchial tree and can be mediastinal or intrapulmonary. PS are classified as intralobar (ILPS) or extralobar (ELPS). We describe the case of a 25-year-old woman who presented with a solitary lung mass that proved to be an unusual association of BC and ILPS. To the best of our knowledge, only 17 cases of this rare association have been reported. Of these 17 patients, 9 for whom gender information was available were female. A PS site was documented in 10 cases: 7 were ILPS and 3 were ELPS. The most commonly involved site was the RLL; only 4 involved the same lobe as in our case. The association of multiple anomalies and exclusive female gender suggests that these malformations are congenital, having a common embryological origin, and are possibly genetically related.