[Polyalveolosis: pathogenesis of congenital lobar emphysema?]

Congenital lobar emphysema: 30-year case series in two university hospitals

OBJECTIVE

To review the cases of patients with congenital lobar emphysema (CLE) submitted to surgical treatment at two university hospitals over a 30-year period.

METHODS

We reviewed the medical records of children with CLE undergoing surgical treatment between 1979 and 2009 at the Botucatu School of Medicine Hospital das Clínicas or the Mogi das Cruzes University Hospital. We analyzed data regarding symptoms, physical examination, radiographic findings, diagnosis, surgical treatment, and postoperative follow-up.

RESULTS

During the period studied, 20 children with CLE underwent surgery. The mean age at the time of surgery was 6.9 months (range, 9 days to 4 years). All of the cases presented with symptoms at birth or during the first months of life. In all cases, chest X-rays were useful in defining the diagnosis. In cases of moderate respiratory distress, chest CT facilitated the diagnosis. One patient with severe respiratory distress was misdiagnosed with hypertensive pneumothorax and underwent chest tube drainage. Only patients with moderate respiratory distress were submitted to bronchoscopy, which revealed no tracheobronchial abnormalities. The surgical approach was lateral muscle-sparing thoracotomy. The left upper and middle lobes were the most often affected, followed by the right upper lobe. Lobectomy was performed in 18 cases, whereas bilobectomy was performed in 2 (together with bronchogenic cyst resection in 1 of those). No postoperative complications were observed. Postoperative follow-up time was at least 24 months (mean, 60 months), and no late complications were observed.

CONCLUSIONS

Although CLE is an uncommon, still neglected disease of uncertain etiology, the radiological diagnosis is easily made and surgical treatment is effective.

Congenital lobar emphysema and intercostal drainage tube insertion: the common fate of an uncommon disease

Congenital Lobar Emphysema (CLE) is one of the rare cystic malformations of the lung. This malformation is generally confused with pneumothorax of the lung and most often, the placement of an intercostal drainage tube is entertained in an emergency situation, but the non- improvement of the distress and non-expansion of the lung are eye openers for a treating paediatrician. We are describing a case of a 26 days old baby who presented with respiratory distress in the Emergency Department. On the basis of the chest X-ray (CXR), we suspected it to be a case of pneumothorax and an intercostal drainage tube was inserted. But as he did not improve, CT of the chest was done and the baby was diagnosed to have congenital lobar emphysema. In spite of the advanced diagnostic techniques, the diagnosis of CLE may present a diagnostic challenge and a high index of suspicion is needed if the diagnosis has to be made promptly.