Congenital lung malformation: Evaluation of prenatal and postnatal radiological findings (original) (raw)
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Accuracy of prenatal and postnatal imaging for management of congenital lung malformations
Journal of Pediatric Surgery, 2020
The purpose of this study was to compare the accuracy of prenatal and postnatal imaging modalities for evaluation and management of congenital lung malformations (CLMs). Methods: A retrospective review was performed of all fetuses evaluated for a CLM between December 2001 and January 2018. Pre and postnatal imaging findings, operative treatment, and patient outcomes were collected. Patients were included in analysis if they had fetal imaging (US and/or fetal MRI), a postnatal chest CT, and surgical pathology. Results: Over the study period, we identified 157 patients with prenatal imaging that also had a follow-up with postnatal chest CT at a median age of 2.1 [1.4, 3.2] months. Of these, 75% (n = 117) had surgical resection. Diagnostic accuracy (DA) for localization of unilobar lesions was 100% for pre-and postnatal imaging and 97% vs 98% for multilobar disease, respectively. On comparison for identification of aberrant vasculature and pathology prediction, pre-and postnatal imaging DAs were similar. However, postnatal CT had the highest specificity for diagnosing lesions overall (p b 0.05). Conclusion: Prenatal imaging provides valuable information for counseling and possible fetal intervention. However, this study suggests that postnatal CT scan continues to provide important information for preoperative counseling and surgical management.
Prenatal diagnosis of congenital lung malformations
Pediatric Radiology, 2012
Prenatal diagnosis of congenital lung anomalies has increased in recent years as imaging methods have benefitted from technical improvements. The purpose of this pictorial essay is to illustrate typical imaging findings of a wide spectrum of congenital lung anomalies on prenatal US and MRI. Moreover, we propose an algorithm based on imaging findings to facilitate the differential diagnosis, and suggest a follow-up algorithm during pregnancy and in the immediate postnatal period.
Magnetic resonance imaging for congenital lung malformations
Pediatric Radiology
Congenital lung malformations are most often identified on prenatal US screening. Fetal MRI is often performed to further evaluate these lesions. Although some of these lesions might cause prenatal or early postnatal symptoms that require urgent management, the majority are asymptomatic at birth and might be subtle or invisible on chest radiographs. Postnatal imaging is frequently deferred until 3-6 months of age, when surgery or long-term conservative management is contemplated. High-quality imaging and interpretation is needed to assist with appropriate decision-making. Contrast-enhanced chest CT, typically with angiographic technique, has been the usual postnatal imaging choice. In this review, the author discusses and illustrates the indications and use of postnatal MR imaging for bronchopulmonary malformations as well as some differential diagnoses and the advantages and disadvantages of MR versus CT.
Congenital lung malformations: can we avoid computed tomography? A five-year study
Polish Journal of Radiology
Purpose: Congenital lung malformations (CLMs) consist of a variety of pulmonary development disorders. In the CLM approach, computed tomography (CT) is considered the gold standard imaging technique due to the high-resolution for the lung parenchyma evaluation, the study of the vascular system after contrast injection, and the multiplanar reconstructions. In the paediatric population CT is considered too invasive due to ionizing radiation and the use of contrast agent. Therefore, the indications for the use of magnetic resonance imaging (MRI) are increasing. The aim of our study is to compare retrospectively MRI and CT in the evaluation of CLMs, to reduce or avoid the use of contrast-enhanced CT in the paediatric population. Material and methods: We retrospectively evaluated 22 paediatric patients with prenatal diagnosis of CLMs. All the patients underwent postnatal MRI in the first 2 weeks of life (except for a patient) and pre-surgery contrast-enhanced CT. A total of 7 blinded radiologists divided into 3 different groups independently reviewed each MRI and CT examination. Sensitivity and specificity of radiologists with different years of experience on the field, as well as of MRI findings regarding every pathology, were evaluated using a ROC curve. The interobserver agreement regarding the MRI findings was also measured. Results: Analysing the ROC curves, we observed that MRI provided a satisfactory accuracy for diagnosing most congenital pulmonary diseases. Conclusions: Our study showed that MRI without contrast agent allows us to reach a CLM diagnosis in good agreement with contrast-enhanced CT, which is considered the gold standard imaging technique.
Lung Malformations: Prenatal Ultrasound Diagnosis and Obstetrical Management
Donald School Journal of Ultrasound in Obstetrics & Gynecology, 2014
Purpose: We present our experience in prenatal diagnosis and obstetrical management of congenital lung malformations (CLM). Materials and methods: The diagnosis of CLM was performed during routine second and third trimester fetal morphology assess ment. The extent of the disease was established accor ding to the type, localization and size of the pulmonary lesion and the presence of fetal complications (mediastinal shift, fetal hydrops, hydramnios). Termination of pregnancy (TOP) was indicated in cases associated with extrapulmonary anomalies, untreatable cases and fetal hydrops. After delivery a pulmonary Xray and surgical examination was performed in all newborns. Results: We diagnosed 15 cases with congenital lung mal for ma tions. Of these, 9 had congenital cystic adenomatoid malfor mation (CCAM). TOP was performed in 6 cases with CCAM. Three cases had a favorable pre/postnatal evolution. Bronchopulmo nary sequestration (BPS) was diagnosed in 3 cases, all with favorable perinatal evolution. Right pulmonary agenesis was diagnosed in one case and the outcome was neonatal death. One case of congenital high airway obstruction syn drome was followed by TOP. One case of severe bilateral pul monary hy poplasia (secondary to a severe bilateral hydrothorax) resulted in neonatal death. Conclusion: Obstetrical management is established individually depending on the severity of the cases.
Purpose: Antenatal diagnosis of congenital cystic adenomatoid lung malformation (CCAM) is vital for disease surveillance and postnatal care. Ultrasonography (US) has been the imaging gold standard for antenatal CCAM assessment. However, one of the limitations of US is the "vanishing phenomenon" caused by isoechogenicity of CCAM tissue and adjacent normal lung parenchyma. Methods: Antenatal serial US were concurrently used with magnetic resonance imaging (MRI) to monitor macro-and microcystic lesions. Results: In both pregnant women, antenatal US and MRI confirmed the presence, in the fetus, of cystic lesions and predicted disease regression/progression as well as the need for postnatal surgical intervention. Several advantages were detected by using both-serial US and MRI (over serial US alone)-including improved signal intensity, exact volume size measurements, precise CCAM location in particular for patients with adverse ultrasound conditions. Both neonates underwent surgical resection and had an uneventful post-operative course. Conclusions: Antenatal use of MRI as well as serial US improved information regarding tissue resolution and delineation of CCAM. The information from two imaging modalities was complementary. Our literature review confirmed the emerging role of prenatal MRI for postnatal monitoring and management of CCAM.
European Journal of Pediatric Surgery, 2013
Aim of Study The aim of this study was to review our experience of postnatal investigations and management of congenital lung lesions. Methods All children with antenatal diagnosis undergoing surgical management were identified from hospital records. Antenatal diagnosis and serial antenatal ultrasound findings were noted, postnatal chest X-ray (CXR) and computed tomographic (CT) scan were reviewed. Pearson correlation coefficient (r) was used to look into relation between CT scan and per-operative findings. Surgical management and outcome of these lesions were assessed. Results A total of 38 children were identified between January 2000 and December 2011; 22 were males and 16 were females. The mean gestational age at diagnosis was 21 weeks (range18 to 26 weeks). Five children showed complete resolution antenatally. Four children were symptomatic at birth. Postnatal CXR showed an abnormality in only 17 infants. CT scan with three-dimensional (3D) reconstructions was performed at the mean age of 7.7 months (range 1 day to 42 months). CT scan correlated well with per-operative findings and provided adequate anatomical information r ¼ 0.98. Open thoracotomy and lobectomy/excision was performed in 23, and 15 had thoracoscopic lobectomy/excision. The mean age of operation was 18 months (range 2 days to 96 months). Twenty patients had signs of recurrent preoperative infection with pleural adhesions and hilar thickening resulting in conversion of 10 thoracoscopic cases to open surgery. Histology confirmed 26 congenital cystic adenomatoid malformations, 2 hybrid lesions, 7 sequestrations, and 3 bronchopulmonary malformations. Conclusions Antenatal resolution and normal postnatal CXR are not reliable indicators of resolution of the lesion. Early postnatal CT scan preferably with 3D reconstruction and early surgical treatment are suggested, as delaying the operation may result in repeated infection making thoracoscopic approach more difficult.
Congenital Lung Lesions: Prenatal Diagnosis and Intervention
Seminars in Pediatric Surgery, 2015
Congenital lung lesions are common sonographic findings in pregnancy, usually detected at the routine 20 weeks scan. The most common is cystic adenomatous malformation of the lung (CCAM). This usually causes few prenatal problems; however, fetal hydrops occurs in about 5%. Prenatal intervention for these is possible in many to allow survival to birth. Bronchoplumonary sequestration (BPS), with an aberrant "feeder" vessel arising from the aorta may co-exist but is detectable as a separate entity by visualization of this vessel. Symptomatic or curative prenatal intervention is again possible in the few severe cases where hydrops or pleural effusions develop. Pleural effusions may be due to a primary leak usually of chylous fluid: prenatal thoracoamniotic shunting may prevent pulmonary hyoplasia or cure the consequent fetal hydrops. More often, however, effusions are a consequence of an underlying abnormality, including many structural or chromosomal abnormalities that may also cause co-existing fetal hydrops. Congenital high airway obstruction (CHAOS) is commonly fatal but cases potentially amenable to prenatal intervention or to immediate perinatal management may be identified using ultrasound or MRI.
Prenatal diagnosis, 2015
The congenital pulmonary airway malformation volume ratio (CVR) is a widely used sonographic measure of relative mass size in fetuses with lung malformations. The purpose of this study was to examine serial CVR measurements to understand longitudinal growth patterns and to determine correlation with postnatal imaging. An IRB-approved retrospective review was performed on fetuses referred for an echogenic lung malformation between 2002 and 2014. For each fetus, the CVR was prospectively calculated using 2D ultrasound and followed with advancing gestation. Based on 40 fetuses, the mean initial CVR was 0.51 ± 0.07 at 20.5 ± 0.3 weeks gestation. The CVR increased after 24 weeks gestation (p = 0.0014), peaking at a CVR of 0.96 ± 0.11 at 25.5 ± 0.05 weeks, followed by a significant decrease in the CVR to 0.43 ± 0.07 prior to term (p < 0.0001). However, approximately one-third showed no appreciable increase in size. The mean CVR was significantly correlated with postnatal chest CT size ...
Congenital lung malformations: a novel application for lung ultrasound?
Journal of Ultrasound, 2019
Congenital lung malformations (CLMs) include a group of different disorders. With widespread use of antenatal ultrasonography (aUS) and increased use of pre-natal magnetic resonance imaging (MRI), CLMs are increasingly detected, nevertheless the best postnatal imaging approach is not yet well defined: newborns usually undergo several chest X-rays and eventually computed tomography to confirm the diagnosis. In this case series, we show lung ultrasound features of three different cases of congenital lung malformations, describing prenatal and postnatal images comparing different imaging techniques.