Related Experiment Videos
Computed tomography in the diagnosis and treatment of mediastinal abnormalities in children
K Ivancev1, A Halldorsdottir, S Laurin
1Department of Diagnostic Radiology, University Hospital, Lund, Sweden.
Insights
Computed tomography (CT) effectively diagnosed pediatric mediastinal abnormalities, including lymphomas and benign lesions. CT aids in monitoring treatment response for lymphomas, but surgical biopsy is crucial for definitive diagnosis due to potential false positives.
Area of Science:
- Pediatric Radiology
- Thoracic Imaging
- Oncology
Background:
- Mediastinal abnormalities in children encompass a range of conditions, from benign cysts to malignant lymphomas.
- Accurate diagnosis and staging are critical for effective treatment planning and patient outcomes.
- Computed tomography (CT) is a key imaging modality for evaluating mediastinal masses.
Purpose of the Study:
- To evaluate the efficacy of computed tomography (CT) in diagnosing and monitoring pediatric mediastinal abnormalities.
- To assess CT's role in differentiating benign from malignant lesions and in treatment follow-up.
Main Methods:
- Retrospective analysis of 31 pediatric patients with mediastinal abnormalities.
- Patients underwent one or more CT examinations.
- Lesions included malignant lymphomas, other malignancies, and benign conditions.
Main Results:
- CT demonstrated high effectiveness in diagnosing cysts, ductus arteriosus aneurysm, and intrathoracic liver.
- CT provided crucial information on disease extent for malignant thymoma, neurinoma, and Hodgkin's lymphoma.
- CT was useful for monitoring lymphoma treatment, consistently showing fibrotic remnants post-therapy.
Conclusions:
- CT is a valuable tool for diagnosing pediatric mediastinal abnormalities and assessing disease extent.
- Enlargement of post-treatment residues may indicate relapse or thymic hyperplasia; CT under anesthesia can simulate recurrence.
- Surgical biopsy is essential for definitive diagnosis when fine-needle aspiration biopsy is unsuccessful.
Abstract:
Thirty-one children with mediastinal abnormalities--14 malignant lymphomas, 4 other primary malignancies, one metastatic and 12 benign lesions--were examined one or several times using CT, which proved to be effective especially for cysts (5 patients), ductus arteriosus aneurysm (2 patients), and intrathoracic liver (one patient). It also supplied important diagnostic information regarding the extent of disease in malignant thymoma (one patient), in neurinoma (one patient), and in Hodgkin's lymphoma (5 patients). It was found to be useful in the monitoring of treatment of patients with lymphomas, in which a small residue, probably a fibrotic remnant, was invariably seen after completion of chemotherapy and irradiation. It was concluded that when the residue was enlarged, the possibility of relapse and even thymic hyperplasia should be considered. However, if CT was performed under general anaesthesia pseudo-widening of the anterior mediastinum could simulate recurrence. Surgical biopsy was found to be necessary in these cases because fine-needle aspiration biopsy was unsuccessful.