# Congenital Thoracic Malformations: A Single-Center Retrospective Study From Hong Kong

## TL;DR

This study examines the management and outcomes of congenital thoracic malformations in Hong Kong, suggesting that conservative approaches may be suitable for asymptomatic cases.

## Contribution

The study provides insights into the clinical course and management of congenital thoracic malformations in a Chinese population.

## Key findings

- Most antenatally diagnosed cases remained asymptomatic during follow-up.
- Pneumonia was the most common complication, especially in postnatally diagnosed cases.
- Surgery was performed in a significant proportion of cases, with notable postoperative complications.

## Abstract

Background

Congenital thoracic malformations (CTMs) are a group of developmental lung anomalies, with congenital pulmonary airway malformation (CPAM) being the most prevalent subgroup of all. There had been controversies over the management approaches in asymptomatic CTMs. The study aims to review the clinical course, management options, and outcomes of CTMs in a Chinese population to provide guidance in the future management of the disease.

Methods

This retrospective study reviewed electronic medical records of Tuen Mun Hospital, Hong Kong, from 2002 to 2024 to include all cases with the diagnosis of CTM confirmed through computed tomography (CT). Cases were categorised into the antenatally diagnosed (AN) group and postnatally diagnosed (PN) group for further analysis.

Results

The cohort analyzed 45 cases, of which 18 belonged to the AN group and 27 belonged to the PN group. The majority of patients in the AN group remained asymptomatic throughout follow-up (61.1%); 48.2% of the PN group presented as incidental findings. Pneumonia was the most common complication, affecting 33.3% of the AN group and up to 59.3% of the PN group. Most of the patients had a single uncomplicated pneumonia (AN group: 83.3%; PN group: 75%). Surgeries were performed in 44.4% of the AN group and 66.7% of the PN group, with notable postoperative complications observed (AN: 25%, PN: 22.2%). Importantly, only one case of lymphoepithelioma-like carcinoma in a patient with bronchopulmonary sequestration (BPS) was identified, and no malignancies were found in other CTM entities.

Conclusion

In view of the relatively indolent and benign course found in this study, a conservative approach with surgery at a later age could be an alternative to early surgery in asymptomatic CTMs.