Pleuropulmonary Blastoma Misinterpreted as Spontaneous Pneumothorax in an Infant

Hypertensive pneumothorax with cystic lesions: Pleuropulmonary blastoma in an infant

Pleuropulmonary blastoma (PPB) is a rare primitive malignant lung cancer that occurs in pediatric age. Its main differential diagnosis is congenital cystic pulmonary malformation (CPAM). A 30-day-old infant with respiratory failure obtained a chest x-ray and a computed tomography scan (CT) which revealed hypertensive pneumothorax with multifocal bilateral cysts. After thoracic drainage, the patient underwent multiple thoracoscopic pulmonary resections. The first histological diagnosis was of type 2 CPAM. During the radiological follow-up, an increase in the number and dimension of the lesions was detected. Thus, a histological revision was performed, leading to the diagnosis of type I PPB, at nine months. The patient subsequently underwent chemotherapy. At the five-year follow-up appointment, chest magnetic resonance (MR) and CT scans showed a dimensional increase in size of the lesions, with the risk of recurrent pneumothorax. An upper right lobectomy and wedge resection of the residual cysts were performed. Control MR scans showed normalization of the lung parenchyma and the patient showed substantial clinical improvement.

Pleuropulmonary blastoma masquerading as pneumothorax in a patient with a ventricular septal defect

Pleuropulmonary blastoma is a rare pediatric primary lung tumor. We report a case of a child with Down syndrome and a large ventricular septal defect presenting with pleuropulmonary blastoma initially misdiagnosed as spontaneous pneumothorax. Following tube thoracostomy drainage of the pneumothorax, the child underwent surgical closure of the ventricular septal defect. However, the postoperative period was complicated by recurrent left pleural collection requiring prolonged intercostal tube drainage and two thoracotomies to evacuate the necrotic pleural material. The biopsy of the necrotic material was suggestive of type III pleuropulmonary blastoma. In view of the high propensity of metastasis associated with this variant of a tumor, the patient was started on chemotherapy. This case report highlights the possibility of pleuropulmonary blastoma presenting as pneumothorax and emphasizes the need to consider the etiology, before intervening in a child presenting with spontaneous pneumothorax.

[Lung Ultrasound in Neonatology to diagnose a Pneumothorax (part one): Evidence - Time for a New Standard Protocol]

Lung ultrasound is a well-studied diagnostic procedure in emergency medicine. Over the last several years, international research groups have investigated the role of lung ultrasound to evaluate neonatal respiratory diseases. Specific diagnostic algorithms and key features of a neonatal pneumothorax have been released. Compared to X-ray examination, lung ultrasound has many advantages, such as faster diagnostic time, lack of exposure to ionizing radiation, and excellent sensitivity and specificity. Thus, lung ultrasound contributes to the improvement of medical healthcare in the neonatal intensive care unit. We consider the use of lung ultrasound as a new standard procedure to diagnose a pneumothorax in neonatology.

[Lung Ultrasound in Neonatology to diagnose a Pneumothorax (part two): A Guideline]

Lung ultrasound is a fast and reliable diagnostic tool in the detection of a neonatal pneumothorax. This tutorial provides basic information for understanding and detecting the generated artefacts, such as A-lines, B-lines, and the lung point. Essential knowledge of these artefacts allows for rule-in and rule-out criteria of a pneumothorax diagnosis. Lung ultrasound could help to reduce the use of radiation in neonatology in the future.