Intraconal Orbital Hidrocystoma in an Infant

Area of Science:

• Ophthalmology
• Pediatric Oncology
• Medical Imaging

Background:

• Intraconal orbital hidrocystoma is an exceptionally rare condition.
• Apocrine hidrocystoma typically affects the eyelids but can occur in the orbit.
• Orbital tumors in infants can present with subtle or significant visual disturbances.

Purpose of the Study:

• To report a rare case of intraconal apocrine hidrocystoma in a pediatric patient.
• To describe the clinical presentation, diagnostic imaging, and surgical management of this rare orbital tumor.
• To discuss the visual outcomes following surgical excision.

Main Methods:

• Case report of a 6-month-old boy with left-sided proptosis and anisometropia.
• Clinical examination including fundoscopy revealing choroidal folds and optic disc blurring.
• Orbital MRI to characterize the intraconal cystic lesion.
• Surgical excision via lateral orbitotomy and histopathological diagnosis.

Main Results:

• The patient presented with mild proptosis, significant anisometropic hypermetropia, choroidal folds, and optic disc blurring.
• Orbital MRI showed a well-defined, intraconal cystic lesion with characteristic signal intensities.
• Complete excision was achieved through lateral orbitotomy.
• Histopathology confirmed the diagnosis of apocrine hidrocystoma.
• Post-operative improvement in proptosis and optic disc blurring was noted, with partial improvement in anisometropia.

Conclusions:

• Intraconal apocrine hidrocystoma is a rare but treatable orbital tumor in children.
• Early diagnosis and complete surgical excision are crucial for favorable outcomes.
• Orbital imaging and histopathology are essential for accurate diagnosis and management.