Spontaneous pneumothorax in children: a radiological perspective.

BACKGROUND: Spontaneous pneumothorax is a common clinical condition due to several etiologies. Appropriate radiologic assessment helps avoid re-imaging and guide individualized management. OBJECTIVE: To describe the etiologic factors of spontaneous pneumothorax in children from a radiological perspective. MATERIALS AND METHODS: Thirty-nine children with spontaneous pneumothorax were evaluated according to their demographic characteristics, the presence of underlying lung diseases, and imaging findings. RESULTS: Twenty-one patients without underlying lung disease were assessed as primary spontaneous pneumothorax; eight of these 21 patients (38.9%) had subpleural air cysts in the apices/upper lobes of the lung on chest computed tomography (CT). In the remaining 18 patients with secondary spontaneous pneumothorax, the most common causes were respiratory diseases (33.3%), infectious lung diseases (33.3%), interstitial lung diseases (27.7%), and connective tissue diseases (5.5%). The mean age of children with secondary spontaneous pneumothorax was lower than that of children with primary spontaneous pneumothorax (P = 0.002). Recurrences occurred in 11 patients (52.3%) with primary spontaneous pneumothorax and three patients (16.6%) with secondary spontaneous pneumothorax. Bilateral pneumothorax was observed in three of the 18 patients with secondary spontaneous pneumothorax. CONCLUSION: Identifying the etiologic factors of spontaneous pneumothorax may help clinicians plan how to reduce the risk of recurrence. Radiologists should keep in mind the possible underlying diseases and assess imaging methods in children with spontaneous pneumothorax for subpleural air cysts and be suspicious about an underlying disease in cases of bilateral pneumothorax and in younger patients.

Acute Pancreatitis and Acute Recurrent Pancreatitis in Children: Imaging Findings and Outcomes.

OBJECTIVE: The prevalence of acute pancreatitis and acute recurrent pancreatitis in children has increased over the years, and there are limited data about imaging findings. This study aimed to reveal the imaging findings of acute pancreatitis and acute recurrent pancreatitis in children at a tertiary care hospital. MATERIALS AND METHODS: The patients with acute pancreatitis and acute recurrent pancreatitis diagnosed between January 2007 and December 2018 were included. Demographic and clinical features, follow-up period, and interventions were noted. Imaging features were evaluated for pancreatic enlargement, peripancreatic fluid, and biliary ducts for initial examination and pancreas parenchymal necrosis, peripancreatic collection, walled-off necrosis, pseudocyst, parenchymal atrophy, and biliary ductal dilatation for follow-up. RESULTS: The study included 74 patients with a mean age of 9 ± 4.9 years. The most common causes of acute pancreatitis and acute recurrent pancreatitis were biliary tract anomalies (n = 21), biliary ductal stones (n = 9), and cystic fibrosis (n = 8). Findings consistent with acute pancreatitis were determined by ultrasound in 40.5% (n = 30/74), whereas by magnetic resonance imaging in 60% (n = 39/65). Forty-one percent of the patients (n = 16) with positive magnetic resonance imaging findings did not show any findings on ultrasound. Acute recurrent pancreatitis was seen in 32 patients (43.2%). Follow-up imaging was performed in 55 patients (74.3%) between 2 months and 11 years. At follow-up, 8 patients had peripancreatic collections (6 walled-off necrosis and 2 pseudocysts). CONCLUSION: Recognizing the imaging findings of acute pancreatitis and its complications is crucial. Magnetic resonance imaging should be preferred as a second option following ultrasound, with the advantages of biliary ductal system delineation and better characterization of complications.

Influence of direct radiography in decision making during orthopaedic trauma surgery: A prospective study.

Objective: To evaluate the effects of intraoperative direct radiography on the change in the patient's treatment and the reliability of fluoroscopy in orthopaedic trauma surgery operations. Methods: A total of 773 fractures were evaluated prospectively. The surgeons involved in the case were divided into three groups according to their experiences: less than 5 years, 5-10 years and over 10 years. After each case, the fracture classification, whether any interventions were made after the X-ray, and the interventions were recorded. Results: There were 312(40%) intra-articular, 200(26%) metaphyseal, 161(21%) diaphyseal, 81(10%) pelvis-acetabulum, and 19(3%) vertebrae fractures. Surgeons needed to intervene in 71(9.2%) cases after direct-radiography. There was a significant difference between the location of the fracture and the number of interventions (p < 0.001). The most frequent interventions were intra-articular distal radius, acetabulum and intra-articular calcaneus fractures, respectively. Surgeons with more than 10 years of the experience felt the need to make fewer changes, it was statistically significant compared to the other two groups (p = 0.001 for both). Conclusion: It was found that the final evaluation with x-ray images before the operation was completed in trauma surgery affected the surgeon's decision. In particular, intra-articular fractures, acetabular fractures, and vertebral fractures are recommended to evaluate fixation with direct radiography in addition to fluoroscopy images before ending the operation. Level of evidence: LEVEL III.

Imaging findings of benign and malignant pediatric splenic lesions.

Splenic lesions in children have a wide histological spectrum. The majority of pediatric splenic lesions are benign and detected incidentally, and the most common benign lesions are cysts, followed by hemangiomas and lymphatic malformations. Most of the splenic malignancies in children are secondary to leukemia or lymphoma. The purpose of this article is to describe the ultrasonography, computed tomography (CT), and magnetic resonance imaging (MRI) features of benign and malignant splenic lesions in the pediatric age group.