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Bilateral subpleural ectopic brain tissue in a 23-week-old fetus
S Balci1, S M Nabaei, F Ozaltin
1Department of Pediatrics, Hacettepe University Faculty of Medicine, Ankara, Turkey.
The Turkish Journal of Pediatrics
|October 11, 2001
Summary
This study reports a rare case of bilateral lung lesions in a fetus, identified as ectopic neural tissue. The findings suggest a potential developmental anomaly involving neuroectodermal differentiation in the lungs.
Area of Science:
- Developmental biology
- Pathology
- Neuropathology
Background:
- Congenital anomalies require thorough investigation for accurate diagnosis and understanding of developmental processes.
- Ectopic tissues, particularly neural tissue, in extraneural locations are exceptionally rare and pose diagnostic challenges.
Observation:
- A 23-week-old male fetus presented with bilateral, subpleural, paravertebral lesions.
- No central nervous system abnormalities were detected via physical examination or magnetic resonance imaging (MRI).
- The lesions were circumscribed, yellowish-white, and measured approximately 2.5 x 1 x 1 cm.
Findings:
- Histological examination revealed mature neural tissue, including neurons, white and gray matter, choroid plexus, and ependymal structures within the lung lesions.
- Immature neuroectodermal cells were also present, exhibiting a more advanced differentiation than typical fetal brain tissue.
- Rare peripheral neural cells were noted, suggesting a complex origin.
Implications:
- This case highlights a unique developmental anomaly, potentially representing a form of congenital choristoma or teratoma with neural differentiation.
- Understanding the origin and behavior of such ectopic neural tissue is crucial for diagnosing and managing rare congenital conditions.
- Further research into the embryogenesis of these lesions could provide insights into neural crest cell migration and differentiation pathways.