Pulmonary sequestration

Pulmonary sequestration are poorly ventilated parts of the lung that are ontogenetically Although the lung associated with, but are self- supplied with blood. Pulmonary sequestration can be the starting point for recurrent infections.

Epidemiology

Pulmonary sequestration is rare. They account for 0.15 to 6.4 % of all pulmonary neoplasms.

Formation

Pulmonary sequestration evolve from supernumerary lung buds in embryogenesis. Primary is no connection to the bronchial system.

Localization

Most frequently pulmonary sequestration found in the region of the left lower lung lobe.

Blood supply

• Arterial blood supply of the thoracic aorta
• Venous drainage through the pulmonary veins

→ with a correspondingly large volume of the feeding vessels this can lead to a cycle relevant shunt.

Classification

Clinic

Since pulmonary sequestration are not primarily connected to the bronchial they are not subject to the self-cleaning as the rest of the lung. So can collect and fix exciting here. This established infections lead to melting and to a secondary connection to the bronchial system. This leads to recurrent and often therapy-resistant pulmonary infections (eg pneumonia ).

Therapy

If a sequester makes no symptoms, it is often not recognized. In existing symptoms Sequester are usually resected surgically. Even if Sequester be accidentally discovered a preventive resection is often indicated.

• Disease in pneumology