Pulmonary Sequestrations

ABSTRACT

Pulmonary sequestrations are defined by the presence of a non functional pulmonary parenchyma with an abnormal vascularisation. Their incidence ranges from 1.1% to 1.8% of all the malformations in the general population. Two types of sequestrations are described - Intralobar sequestrations the most common, localised within a normal parenchyma. - Extralobar sequestrations totally separate from the lung with their own pleural covering. We report two cases of sequestrations. In the first case, the radioclinical presentation was strongly suggestive of this diagnosis in a 32 - year old woman with recurrent hemoptysis, airspace opacity in the left retrocardiac region and a systemic vascularisation of this mass on tomodensitometry. Pathological studies after surgery confirmed the diagnosis of intralobar sequestration type I in the classification of PRYCE. In the second case a thoracoscopy performed on a 14 - year-old boy who had a serohematic pleural effusion, revealed a left costodiaphragmatic mass. Surgical removal of this mass confirmed its extralobar pulmonary nature