Application of ultrasound in a congenital cystic adenomatoid malformation in an adult: A case report

Rare presentation of pneumothorax in a young woman with underlying congenital pulmonary airway malformation

Congenital pulmonary airway malformation (CPAM) is the most common among a rare group of congenital anomalies of the lower respiratory tract. It has variable presentation depending on its subtype and the patient's age. It may lead to respiratory distress in neonates. It can be a particularly challenging diagnosis in children born asymptomatic but present with complications later in life such as haemoptysis, recurrent chest infections, breathlessness and pneumothorax. Prenatal ultrasound, chest X-ray, CT scan and MRI are helpful in making a radiological diagnosis.A woman in her late teens presented with shortness of breath and right pleuritic chest pain. CT's chest showed a number of bullae of varying sizes on the right, including one huge bulla compressing all three lobes. She underwent lung volume reduction surgery via video-assisted thoracoscopy, and the histology specimen confirmed the diagnosis of CPAM type 1.

Hypoxia and Polycythemia: A Pediatric Emergency Department Point of Care Ultrasound Diagnosis of Pulmonary Arteriovenous Malformation

Point of care ultrasound (POCUS) can be useful in the differentiation between cardiac and pulmonary etiologies of hypoxia. Here, we present a child with signs of chronic hypoxia, found on POCUS to have multiple pulmonary arteriovenous malformations. A combination of POCUS and history supported a presumptive pediatric emergency department diagnosis of hereditary hemorrhagic telangiectasia. This case is the first case of a pulmonary arteriovenous malformation found on POCUS and reinforces the importance of POCUS as a first-line examination in the evaluation of chronic hypoxia in the pediatric emergency department.

Congenital cystic adenomatoid malformation associated with right aortic arch with mirror image branching and absence of left pulmonary artery in an adult

Background

Congenital cystic adenomatoid malformation is an uncommon developmental anomaly that is diagnosed prenatally or during early childhood and is rare to present in adulthood. Type 2 congenital cystic adenomatoid malformation is often associated with other anomalies such as congenital cardiac anomalies. We present a case of type 2 congenital cystic adenomatoid malformation in an adult male associated with absence of left pulmonary artery and right aortic arch with mirror image branching. To our knowledge, this is the first case report with the combination of all three anomalies.

Case presentation

A 33-year-old male presented to the Department of Pulmonary Medicine with high-grade fever, chills and rigor, breathlessness, and productive cough for a duration of one week. He had multiple similar self-limiting episodes in the past which did not require hospitalization. The plain radiograph showed right aortic arch and a small left hilum. CT thorax showed multiple cystic lesions of size 0.5–2.0 cm in the apico-posterior segment of the left upper lobe; anterior, posterior, and lateral segments of the left lower lobe; and the apical segment of the right upper lobe with a maximal cyst wall thickness of 2 mm. Volume of left lung was reduced with trans-thoracic herniation of the medial segment of the right middle lobe; bronchiectatic changes were seen in the apical, anterior, and posterior segments of the right upper lobe; and fibrotic strands were seen in the apical segment of the right lower lobe and the apico-posterior segment of the right upper lobe. Mediastinal window showed right-sided aortic arch with mirror image branching. The pulmonary trunk was seen to continue as the right pulmonary artery with absent left pulmonary artery.

Conclusions

Though congenital cystic adenomatoid malformation is a disease of infancy and childhood, it should also be considered in adults presenting with recurrent lower respiratory tract infections and/or pneumothorax. Radiologists must be aware of the types of congenital cystic adenomatous malformation (CCAM) and their associations, as type 2 CCAM has a high association with congenital cardiac disease. Proximal interruption of pulmonary artery should be considered if the pulmonary trunk continues as either right or left pulmonary artery.

Lung Ultrasound in the Neonatal Intensive Care Unit: Does It Impact Clinical Care?

A neonatal point-of-care ultrasound has multiple applications, but its use has been limited in neonatal intensive care units in the Unites States. An increasing body of evidence suggests that lung ultrasound performed by the neonatologist, at the bedside, is reliable and accurate in differentiating neonatal respiratory conditions, predicting morbidity, and guiding invasive interventions. Recent research has shown that a lung ultrasound can assist the clinician in accurately identifying and managing conditions such as respiratory distress syndrome, transient tachypnea of the newborn, and bronchopulmonary dysplasia. In this review, we discuss basic lung ultrasound terminology, evidence for applications of neonatal lung ultrasound, and its use as a diagnostic and predictive tool for common neonatal respiratory pathologies.

Pediatric Congenital Lung Malformations: Imaging Guidelines and Recommendations

Congenital lung malformations are a spectrum of developmental anomalies comprised of malformations of the lung parenchyma, airways, and vasculature. Imaging assessment plays a pivotal role in the initial diagnosis, management, and follow-up evaluation of congenital lung malformations in the pediatric population. However, there is currently a lack of practical imaging guidelines and recommendations for the diagnostic imaging assessment of congenital lung malformations in infants and children. This article reviews the current evidence regarding the imaging evaluation of congenital lung malformations and provides up-to-date imaging recommendations for pediatric congenital lung malformations.

A rare case of congenital pulmonary airway malformation in a 14-year-old male presenting with spontaneous pneumothorax

Introduction

and importance: Congenital pulmonary airway malformation (CPAM), formerly known as congenital cystic adenomatoid malformation (CCAM), is a rare developmental dysplatic lesion of the fetal tracheobronchial tree. It accounts for approximately 25 % of all congenital lung malformations. It is usually unilateral and involves one lobe with no significant gender or racial predilection. The vast majority of reported CPAM cases were discovered prenatally or within the first 2 years of life; however, it is rarely found in older children and adults.

Case presentation

The purpose of this paper is to present a case of a 14-year-old male with a chest tube inserted 5 days before, as a management to left-sided spontaneous pneumothorax. His vital signs and laboratory tests were all within normal. Chest X-ray showed irregular opacity in the left lung field.

Clinical discussion

CT revealed multiple cystic-like lesions in the upper lobe of the left lung. The clinical impression was pointing towards a congenital lung lesion. The patient then underwent surgery. There were several pleural adhesions. The adhesions were released, and the upper left lobe was resected. Histopathological findings were compatible with type II CPAM. Four days postoperatively, chest X-ray was within the normal.

Conclusion

We report this case to highlight the importance of considering CPAM and other congenital malformations as a differential diagnosis in the adult population, especially in patients with sudden onset of pulmonary symptoms along with multiple cystic-like lesions on CT, as well as to draw attention towards spontaneous pneumothorax as a possible first presentation for CPAM.