Surgeons in China have reported promising early results with a refined minimally invasive technique that removes only the diseased portions of a child’s lung while sparing as much healthy tissue as possible. The procedure, described as an “Arch” thoracoscopic posterior and lateral basal segmentectomy, was developed to treat congenital lung malformations, a family of birth defects in which abnormal lung tissue forms before birth and can cause repeated infections, breathing difficulties, and other complications as a child grows. The study, published in BMC Pediatrics, offers one of the most detailed looks yet at whether this lung-preserving approach can match the safety of more established operations.
Congenital lung malformations encompass a spectrum of structural abnormalities, including congenital pulmonary airway malformations, in which cyst-like maldeveloped airway tissue replaces normal lung, and pulmonary sequestration, in which a piece of lung tissue lacks a normal connection to the airway and instead receives its blood supply from the systemic circulation. When these lesions occupy the posterior and lateral basal segments of the lower lung lobe, the segments labeled S9 and S10 in the standard anatomical numbering system, surgeons have traditionally faced a choice between removing the entire lobe through a lobectomy or performing a segmentectomy that isolates and removes only the affected segments. Each option carries trade-offs that matter enormously for a growing child.
Lobectomy is technically straightforward and reliably removes the malformation, which is why it has long been the default operation. But a child’s lungs continue to develop throughout childhood, and every gram of healthy parenchyma removed represents tissue that can never contribute to gas exchange. Segmentectomy, by contrast, demands meticulous dissection of the segmental blood vessels, airways, and the invisible planes between adjacent lung segments, but it preserves the superior segment, known as S6, and its vital connection to the remaining basal lung tissue. The team behind the new study, led by surgeons at the Children’s Hospital Affiliated to Shandong University and Jinan Children’s Hospital, set out to determine whether their arch-shaped modification of segmentectomy could make this lung-sparing option safer and more predictable.
The retrospective analysis reviewed the records of 77 children with congenital lung malformations who underwent thoracoscopic surgery between January 2019 and June 2023. The patients were divided into three groups according to the operation they received: 22 children underwent thoracoscopic lobectomy, 33 underwent conventional thoracoscopic S9-10 segmentectomy, and 22 underwent the new “Arch” thoracoscopic S9-10 segmentectomy. The researchers compared perioperative outcomes, postoperative findings, and radiological follow-up across the groups, and they applied the Bonferroni correction to pairwise comparisons, a statistical adjustment designed to reduce the risk of false-positive findings when multiple comparisons are made simultaneously.
The defining feature of the Arch technique lies in how the surgeon shapes the cut across the lung parenchyma. In a conventional segmentectomy, the division of the S9-10 segments can leave a broad, flat raw surface on the remaining lung, and the interface between the resected area and the preserved superior segment can be technically awkward to manage. The Arch approach instead creates an arch-like, curved resection line that follows the natural anatomical boundary between the basal segments and the superior segment. This curved geometry is intended to preserve the connection between S6 and the remaining basal parenchyma more faithfully, maintain the natural contour of the lower lobe, and reduce tension on the staple or suture lines that seal the lung after the diseased tissue is removed.
Every one of the 77 procedures in the study was completed thoracoscopically, meaning the surgeons operated through small incisions using a camera and long instruments rather than opening the chest. There were no conversions to open thoracotomy, no reoperations, no severe complications, and no residual lesion left behind in any patient. That clean safety record across all three surgical approaches is itself a notable finding, because segmentectomy in children is widely regarded as more technically demanding than lobectomy, and the study demonstrates that in experienced hands both conventional and arch-shaped segmentectomy can be completed entirely through keyhole surgery.
When the researchers examined the details of recovery, some expected patterns emerged. Lobectomy was associated with shorter operative time, shorter chest tube duration, and a shorter postoperative hospital stay than either of the segmentectomy procedures, which is consistent with the simpler nature of removing an entire lobe at once rather than dissecting individual segments. Comparing the two segmentectomy techniques directly, the Arch group showed lower mean blood loss than the conventional group, although the authors were careful to note that the absolute difference was small. The difference in operative time between the two segmentectomy groups did not remain statistically significant after adjustment for multiple comparisons, a reminder that apparent advantages seen in raw numbers can dissolve under rigorous statistical scrutiny.
Complications in the series were few and mild. Postoperative air leak, a common and usually self-limiting event in lung surgery in which air escapes from the cut lung surface into the chest drain, occurred in exactly one patient in each of the two segmentectomy groups, and both leaks resolved with drainage alone. In the Arch group, two patients developed a loculated postoperative air collection, meaning a pocket of air became walled off within the chest cavity, but these collections resolved spontaneously within three months without any surgical intervention. No major complications were observed in the Arch group, and the overall perioperative event profile was similar across all three groups in this series.
The authors are explicit that the study’s conclusions must be interpreted with appropriate caution. As a retrospective review, the analysis depends on how patients were selected for each operation in the first place, and the groups were not randomized. The small differences in perioperative outcomes between the techniques should not be overread, particularly given the statistical adjustments and the modest size of the cohorts. What the study does establish, according to its authors, is feasibility: in selected children whose congenital lung malformations are confined to the S9-10 segments, the Arch thoracoscopic segmentectomy can be performed safely, with no major complications observed, and its main potential value lies in preserving the S6-basal segment connection and normal lung parenchyma that a lobectomy would sacrifice.
That preservation may prove to be the technique’s most important legacy. For a child with decades of growth and physical activity ahead, the difference between losing an entire lower lobe and losing only its two most diseased basal segments could translate into meaningfully better lung function, exercise capacity, and quality of life over a lifetime. The research team emphasizes that prospective studies with long-term functional assessment are needed before the Arch technique can be considered a standard of care, and such studies would need to measure not just operative metrics but actual lung growth and function over years of follow-up. Until then, the study stands as an encouraging proof of concept that the geometry of a surgical resection line, shaped like an arch to respect the lung’s natural architecture, may help surgeons remove disease while giving healthy tissue every chance to thrive.
Subject of Research: Arch-shaped thoracoscopic segmentectomy for congenital lung malformations in children
Article Title: Arch-like thoracoscopic posterior and lateral basal segmentectomy for congenital lung malformations in children
Article References: Guo, R., Zhang, S., Zhai, Y., Zhao, H., Cui, R., & Li, J. (2026). Arch-like thoracoscopic posterior and lateral basal segmentectomy for congenital lung malformations in children. BMC Pediatrics. https://doi.org/10.1186/s12887-026-07655-z
Image Credits: AI Generated
DOI: 10.1186/s12887-026-07655-z
Keywords: congenital lung malformations, thoracoscopy, segmentectomy, pediatric surgery, minimally invasive surgery, lung-preserving surgery, lobectomy, S9-10 segments, pulmonary sequestration, CPAM, thoracic surgery, BMC Pediatrics
Cite Scienmag News
APA
MLA
Chicago
Ophelia Keating. (October 2, 2026). Arch-Shaped Lung Surgery Preserves Healthy Tissue in Children with Congenital Malformations. Scienmag. https://scienmag.com/arch-shaped-lung-surgery-preserves-healthy-tissue-in-children-with-congenital-malformations/
Ophelia Keating. “Arch-Shaped Lung Surgery Preserves Healthy Tissue in Children with Congenital Malformations.” Scienmag, 2 October 2026, https://scienmag.com/arch-shaped-lung-surgery-preserves-healthy-tissue-in-children-with-congenital-malformations/. Accessed 2 October 2026.
Ophelia Keating. “Arch-Shaped Lung Surgery Preserves Healthy Tissue in Children with Congenital Malformations.” Scienmag. October 2, 2026. https://scienmag.com/arch-shaped-lung-surgery-preserves-healthy-tissue-in-children-with-congenital-malformations/
Copy citation
Download RIS
Tags: arch-shaped segmentectomyBMC PediatricsChildren’s lung preservationcongenital lung malformation treatmentcongenital lung malformationscongenital pulmonary airway malformationsCPAMearly results of minimally invasive pediatric thoracic surgerylobectomylung segmentectomy for congenital anomalieslung tissue-sparing surgical techniqueslung-preserving surgeryMinimally invasive surgeryminimally invasive thoracoscopic lung surgerypediatric lung surgery outcomespediatric surgerypulmonary sequestrationpulmonary sequestration managementS9-10 segmentssafety of lung-preserving operations in childrensegmentectomythoracic surgerythoracoscopic posterior and lateral basal segmentectomythoracoscopy
