Thoracoscopic Resection in the Treatment of Spontaneous Pneumothorax.

OBJECTIVES: We retrospectively evaluated the patients with primer spontaneous pneumothorax (PSP) who were treated with thoracoscopic resection.
METHODS: We retrospectively collected the data of the patients with a spontaneous pneumothorax who were operated with video-assisted thoracoscopic surgery (VATS) between 2010 and 2016.
RESULTS: During the study period, 10 patients applied to our hospital with spontaneous pneumothorax. Five children (three boys, two girls) with a mean age of 16.6 (16-17) were selected with VATS. Three of the patients had bleb, one of the patients had Congenital Cystic Adenomatoid Malformation (CCAM) type 2, and the last one had chronic emphysematous tissue on pathological analyses. Post-operative follow-up time was 2.2 (1-4) years without any complication.
CONCLUSION: Spontaneous pneumothorax is a disease especially seen in puberty. The main reasons are apical segment bullae formation and blebs. VATS is especially advantageous to reach apical segments and for easy resections. Blebs, CCAM and emphysematous lung tissue may cause spontaneous pneumothorax. Copyright:

Primary Spontaneous Pneumothorax (PSP) is a rare disease of childhood. PSP is seen with an incidence rate of 1/3.400.000 and more frequently in men.[1,2] PSP recurs in 30% of the patients after conservative treatment. In some series, this rate has been reported to be 50-60%.[3] Conservative treatment is performed with the application of a chest tube. Treatment of PSPs is still controversial today.[4,5]

Video-assisted thoracoscopic surgery (VATS) has gained popularity in the diagnosis and treatment of PSP in the last 10 years. Thanks to thoracoscopy, lesions that cause PSP can be identified, and surgical treatment can be performed. Today, VATS has begun to replace open surgery in the treatment of PSP. Bulla resections with VATS, pleural abrasion and pleurectomy are successfully performed in the treatment of PSP.[6] We retrospectively evaluated our patients who underwent thoracoscopic resection with the indication of the PSP based on their medical records.

Methods

In this study, we retrospectively evaluated PSP patients we treated with VATS between 2010 and 2016. In all our patients, the diagnosis of PSP was determined by chest radiography. Thorax tube was inserted to all patients with pneumothorax larger than 2 cm. Surgical indications were applied to patients with air leakage persisting for more than 48 hours. Other surgical indications are recurrent ipsilateral side pneumothoraxes presence of previous contralateral pneumothorax and persistent air leakage.

The VATS procedure was performed using double or single- lumen endotracheal intubation (ET) depending on the experience of the anesthesiologist under general anesthesia with the patient in the lateral decubitus position (Fig. 1). Two 5 mm and one 15 mm ports were used. Resections were performed with the help of a stapler in patients with bulla (Fig. 2). Postoperatively a chest tube was placed. After discharge, patients were followed up for pneumothorax that may develop on the same or contralateral side (Fig. 3).

Figure 1

The patient’s position.

Figure 2

Lung resection material.

Figure 3

Postoperative appearance.

Results

During the study period, 10 patients applied to our hospital due to spontaneous pneumothorax. Five children (three boys and two girls) with an average age of 16.6 (16-17 years) were operated with VATS. Computed tomography (CT) showed bulla formation in the apical region in two patients and in the superior segment of the inferior lobe in one patient (Fig. 4). All patients with persistent air leaks in tube thoracostomy were operated with VATS, and staples were used for resection. Apical lobe resection was applied in one patient due to bulla formation. The mean postoperative duration of tube thoracostomy was 3.3 (3-5 days) days. Three patients had a bulla, one patient had Congenital Cystic Adenomatoid Malformation (CCAM) type 2, and the third one had chronic emphysematous tissue detected during the pathological examination. The postoperative follow-up period was 2.2 (1-4 years) years without any complications.

Figure 4

CT image of the bleb.

Discussion

PSP is a life-threatening disease in adolescents and asthenic-looking adults.[7] Diagnosis is usually made by chest radiography. CT is a necessary and useful test to demonstrate the presence and etiology of the bulla.[8] The recurrence rate in patients treated with a chest tube is high (30-60%).[9] Definitive therapy is successfully applied with VATS, which is gaining popularity nowadays.[6] With thoracoscopy, apical segments of the lung can be easily seen. With the developments in the medical materials used, resections can be made with staples at angles appropriate to the desired region.

Pleural abrasion and pleurectomy procedures can be performed with VATS. Although these procedures reduce the rate of recurrence, they cause local adhesions and development of serious hematoma, especially after pleurectomy. Severe bleeding may occur in reoperations due to the presence of large vessels in this region. Thus, we prefer to perform the only resection in our clinic and conduct a long term close follow-up instead of adding abrasion and pleurectomy procedures. Our follow-up period was 2.2 years (1-4 years). During this period, none of our patients developed recurrence. The reason for the development of PSP maybe not only bulla formation but also CCAM and emphysema.[12] In one of our patients, we detected CCAM Type 2 and emphysema in resection material.

As a result, VATS is safe in pediatric patients with PSP and is frequently preferred today. Lung resection for etiology without pleurodesis and pleurectomy is an effective method in the treatment of PSP.[13] Long-term follow-up of these patients should be made concerning detecting recurrence and pneumothorax that may develop on the contralateral side.