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[Diagnostic imaging of intraocular lesions in the child]
Insights
Early diagnosis of intraocular lesions in children is crucial. Echography is the safest, most economical, and rapid diagnostic tool, even for complex retinoblastoma cases.
Area of Science:
- Ophthalmology
- Pediatric Oncology
- Medical Imaging
Background:
- Prompt diagnosis of intraocular lesions in children is essential, with retinoblastoma being a primary concern.
- A comprehensive approach integrating clinical examination, fundus photography, and advanced imaging is necessary.
Observation:
- Echography is the initial diagnostic modality for all intraocular lesions in children.
- Ultrasound biomicroscopy is utilized for suspected anterior segment involvement.
- Computed tomography (CT) is indicated when echography reveals no calcifications or to assess lesion extension, particularly to the optic nerve.
Findings:
- Magnetic resonance imaging (MRI) is preferred for evaluating secondary retinal detachment, extensive retinoblastoma, and potential pineal gland involvement (pinealoblastoma).
- CT and MRI are generally avoided in unilateral, unifocal, sporadic retinoblastoma unless optic nerve or orbital extension is suspected.
- Echography proves to be the most cost-effective, swift, and secure diagnostic method, effective even in challenging cases.
Implications:
- This diagnostic strategy optimizes the detection and management of pediatric intraocular tumors.
- The tiered imaging approach ensures appropriate utilization of resources while maximizing diagnostic accuracy.
- Timely and accurate diagnosis through these methods is critical for improving patient outcomes in retinoblastoma.
Background:
A certain diagnosis, as soon as possible, is indispensable in children with intraocular lesions, the presence of retinoblastoma always being a possibility.
Patients:
From our casuistic of 418 children since 1970 and from the literature, we currently adopt the following attitude. Where the media are clear, a drawing and fundus photographs are made. Echography is performed in all cases. Ultrasound biomicroscopic examination is carried out in all lesions where involvement of the anterior segment is suspected.
Results:
Where echography shows no calcifications, computed tomography (CT) is indicated. CT may also enable a possible lesion extension, particularly to the optic nerve, to be studied.
Conclusions:
Magnetic resonance imaging (RMI) is the procedure of choice for evaluating secondary retinal detachment, massive extension of retinoblastoma and for detecting any early involvement of the pineal gland (pinealoblastoma), or any other associated lesion. In case of unilateral unifocal sporadic retinoblastoma, however, no CT or MRI is performed, except where there is a suspected extension into the optic nerve or the orbit. Echography remains the most economical, rapid and safest means of diagnosis even in difficult cases.