Introduction of thoracoscopic surgery for congenital pulmonary airway malformation in infants: review of 13 consecutive surgical cases

Surgical Management of Congenital Pulmonary Airway Malformations (CPAM) in an Infant and a Toddler: Case Report Depicting Two Distinct Surgical Techniques With Successful Outcomes

Congenital pulmonary airway malformations (CPAM) compose the major part of congenital lung malformations (CLM) and have traditionally been treated by pulmonary lobectomy. In terms of surgical strategy, lobectomy has conventionally been the preferred treatment for CPAM localized to a single lobe. More recently, alternative approaches including lung-sparing resections (LSR), such as wedge or non-anatomic resections and segmentectomy, have been suggested. In asymptomatic CPAM early surgical resection is often shown to reduce infection and malignancy development. We describe two patients who were diagnosed with CPAM when being evaluated for respiratory tract infection. Patient 1 (P1) was a two-month-old infant weighing 4 kg with glucose-6-phosphate dehydrogenase (G6PD) deficiency and Patient 2 (P2) was a toddler aged one year, nine months weighing 9 kg. P1 underwent LSR for the CPAM diagnosed in the left upper lobe of the lung with conventional mechanical ventilation whilst right upper lobectomy was performed in P2 using one/single lung ventilation. In both cases, LSR and right upper lobectomy led to an uneventful postoperative recovery with no complications reported.

Sublobar Pulmonary Resection in Children With Congenital Lung Abnormalities: A Systematic Review

BACKGROUND

Lobectomy is currently the advised resection for symptomatic congenital lung abnormalities (CLA). Sublobar surgery is suggested as an alternative that enables to conserve healthy lung parenchyma. This systematic review aims to explore the outcomes of sublobar surgery in CLA patients as well as the corresponding surgical terminology and techniques.

METHODS

A systematic literature search was performed in adherence to PRISMA-P guidelines. The target population consists of children undergoing sublobar pulmonary resection for CLA. All studies were independently assessed by two reviewers, and evaluated by a third reviewer in case of disagreement.

RESULTS

The literature search yielded 901 studies of which 18 studies were included, comprising 1167 cases. The median chest tube insertion duration was 3.6 days (range 2.0-6.9 days), the median hospital admission was 4.9 days (range 2.0-14.5 days), and residual disease was diagnosed in 2% - leading to re-operation in 70%. The median incidence of postoperative complications was 15% (range 0-67%). Follow-up imaging was standard-of-care in 2/3 of studies. Due to the absence of standardised terminology, operative details and specification of resection type did not typically relate between studies.

CONCLUSIONS

Sublobar resection of CLA lesions could be a viable alternative to lobectomy in certain cases, with the advantage of conserving healthy lung parenchyma. Peri- and postoperative complications are comparable with those reported for conventional lobectomy. The incidence of residual disease following sublobar surgery appears to be lower than commonly stated. To improve comparability between studies, we recommend reporting perioperative characteristics in a structured format.

LEVEL OF EVIDENCE

Level IV.

Successful complete tumor resection for pulmonary mucoepidermoid carcinoma by thoracoscopic right upper lobectomy with intraoperative bronchoscopy: A pediatric case report

INTRODUCTION AND IMPORTANCE

Mucoepidermoid carcinoma presents as an exophytic endobronchial mass that induces obstructive symptoms often followed by distal collapse atelectasis of the lung parenchyma.

CASE PRESENTATION

A six-year-old girl had recurrent bacterial pneumonia and atelectasis of the right upper lobe. Computed tomography revealed a 30-mm mass in the anterior segment of the right upper lobe with an obstructed trachea and peripheral atelectasis. A minor salivary gland tumor was suspected, so thoracoscopic right upper lobectomy (RUL) was performed. Intraoperative bronchoscopy showed no protrusion of the tumor into the tracheal lumen. We confirmed that there was no injury to the middle lobe branch and no residual tumor via bronchoscopy before transection of the trachel bronchus of the right upper lobe. The histological type was low-grade mucoepidermoid carcinoma. The postoperative course was uneventful, and no recurrence was evident after one year.

CLINICAL DISCUSSION

Primary pulmonary cancers in children are extremely rare. Mucoepidermoid carcinoma is the most common disease in pediatric primary lung tumors but remains relatively rare. Mucoepidermoid carcinoma of the tracheobronchial tree sometimes requires sleeve resection. Intraoperative bronchoscopy helped determine the exact position of the tumor. The value of intraoperative bronchoscopy for sparing the lung parenchyma and preserving as much of the respiratory function as possible. Intraoperative bronchoscopy should be actively performed in cases of pediatric lobectomy, especially those involving tracheobronchial tumors.

CONCLUSION

Intraoperative bronchoscopy allowed for complete RUL without residual tumor or injury of the middle lobe bronchus.

Long-Term Results of Pediatric Congenital Pulmonary Malformation: A Population-Based Matched Case-Control Study with a Mean 7-Year Follow-Up

Symptomatic congenital pulmonary malformations (CPMs) are a group of anomalies involving the lungs. The long-term outcomes of these patients are not well known. The present research aimed to study the pulmonary function, respiratory morbidity, and health-related quality of life (QoL) of patients treated for CPMs. All children (<16 years of age) treated for CPMs in 2002−2012 (in Oulu University Hospital) were invited to the follow-up visit. Altogether, there were 22 patients, out of which 17 (77%) participated. The mean follow-up time was 6.6 (ranged from 3 to 16) years. Pulmonary function tests, diffusing capacity, respiratory morbidity, and QoL were determined as the primary outcomes. Potential residual malformations and lung anatomy were investigated using computer tomography (CT) imaging. The outcomes were compared to the age- and sex-matched healthy controls. The forced expiratory volume at 1 s (FEV1, Z-score) remained lower in operated patients compared to the healthy controls (−1.57 ± SD 1.35 vs. −0.39 ± SD −0.86, p-value 0.005). There were no differences in respiratory morbidity or QoL between the patients and the controls. The surgical approach (lobectomy vs. partial resection) did not affect lung function. A younger age (<1 year of age) at the time of the surgery seemed to result in a higher lung capacity, but the finding was not statistically significant. Patients with CPMs treated with surgery were satisfied with their wellbeing in the long-term. A lower lung function did not have an impact on their wellbeing. However, there was a slight decrease in lung function compared to the healthy controls, and a clinical follow-up of the patients was recommended.

Factors Associated With Successful Video-Assisted Thoracoscopic Surgery for Traumatic Hemothorax in Children: A Cross-Sectional Study

INTRODUCTION

Due to the rarity of traumatic hemothorax in children, no studies have evaluated factors associated with successful video-assisted thoracoscopic surgery (VATS) as definitive management.

METHODS

We conducted an exploratory cross-sectional analysis of pediatric patients in the Trauma Quality Programs database from 2008 to 2017 with traumatic hemothorax managed with primary VATS. Those with early resuscitative thoracotomy for cardiac arrest were excluded. We stratified patients by blunt or penetrating mechanism and estimated absolute differences (ADs) and 95% confidence intervals (CIs) to identify factors associated with successful VATS without conversion to thoracotomy or reoperation.

RESULTS

A total of 293 patients were eligible. Among 184 penetrating injuries, 150 (82%) underwent successful VATS, 6 (3%) required reoperation, and 28 (15%) converted to thoracotomy. Diaphragmatic injuries (AD = -28, 95% CI = -46 to -10) and rib fractures (AD = 12, 95% CI = 1 to 23) had the strongest negative and positive associations (respectively) with successful VATS. There were 109 blunt injuries: 86 (79%) underwent successful VATS, 6 (6%) required reoperation, and 17 (16%) converted to thoracotomy. Moderate or severe head injury (AD = -15, 95% CI = -32 to 2), injury severity score >15 (AD = -19, 95% CI = -33 to -5), and the presence of diaphragmatic injury (AD = -38, 95% CI = -71 to -4) had the strongest negative associations with successful VATS.

CONCLUSIONS

Some children with traumatic hemothorax can be successfully managed with VATS. For penetrating mechanism, diaphragmatic injuries were associated with less success, while rib fractures were associated with more success. For blunt mechanism, diaphragmatic injuries, injury severity score >15, or moderate or severe head injury were associated with less success.

Morbidity after thoracoscopic resection of congenital pulmonary airway malformations (CPAM): single center experience over a decade

PURPOSE

Video-assisted thoracoscopic (VATS) resection of CPAM in children is an established, albeit controversial strategy for its management. We report a 10-year single center experience.

METHODS

All children underwent VATS (2008-2017) and their current status was reviewed. Patients were grouped: 'symptomatic-P' (if parents reported recurrent lower respiratory tract infections etc.) or 'symptomatic-S' (neonates presenting with respiratory distress/difficulty) or 'asymptomatic'.

RESULTS

73 children, aged 10 m (4d-14yrs) underwent VATS; a neonate as an emergency ('symptomatic-S') and all others electively. The lesion was unilateral in all but one case. Histologically none were malignant. Of the elective 72 cases, 7 (10%) required conversion to open thoracotomy. Twenty (27.7%) were 'symptomatic-P' and the duration of surgery when compared to 'asymptomatic' children was longer 269 (range 129-689) versus 178 (range 69-575) minutes (P = 0.01). Post operatively, 8 children (11%) had a grade III/IV (Clavien-Dindo) complication; persistent air leak/pneumothorax (n = 5), chylothorax (n = 1), pleural effusion (n = 1) and seizure/middle cerebral artery thrombosis (n = 1). There was no mortality. Twenty-four children (33.3%) were reported 'symptomatic-P' post-surgery after a median follow up of 2.18 years. The surgical intervention had no impact on 'symptomatic-P' status (P = 0.46).

CONCLUSION

The risks of surgery may outweigh benefit in asymptomatic children. CLINICALTRIALS.

GOV IDENTIFIER

NCT04449614.

Is thoracoscopy superior to thoracotomy in the treatment of congenital lung malformations? An updated meta-analysis

Background:

A meta-analysis was performed for a comparison of outcomes between video-assisted thoracoscopic surgery (VATS) and thoracotomy for congenital lung malformations (CLM).

Methods:

Electronic databases, including PubMed, Scopus, Embase, and the Cochrane Library were searched systematically for literature aimed mainly at reporting the therapeutic effects for CLM administrated by VATS and thoracotomy.

Results:

A total of 40 studies meeting the inclusion criteria were included, involving 2896 subjects. VATS was associated with fewer complications [odds ratio (OR) 0.54; 95% confidence interval (CI), 0.42–0.69], less use of epidural anesthesia (OR, 0.08; 95% CI, 0.03–0.23), shorter length of hospital stay [standard mean difference (SMD) −0.98; 95% CI, −1.4 to −0.55] and chest drainage (SMD, −0.43; 95% CI, −0.7 to −0.17), as compared with thoracotomy. However, thoracotomy showed superiority in reduced operative time (SMD, 0.44; 95% CI, 0.04–0.84). Pearson analysis (Pearson r = 0.85, 95% CI, 0.28 to 0.98, p = 0.01) and linear regression (R square 0.73) confirmed a positive correlation between percentage of symptomatic cases and conversion in patients using VATS.

Conclusion:

VATS is associated with fewer complications, less use of epidural anesthesia, shorter length of stay and length of chest drainage, but longer operative time, as compared with thoracotomy. Symptomatic patients with CLM using VATS may be prone to conversion to thoracotomy.

The reviews of this paper are available via the supplemental material section.