Primary Diffuse Leptomeningeal Melanomatosis Leading to Raised Intracranial Pressure in a Pediatric Patient

Area of Science:

• Neurology
• Oncology
• Pathology

Background:

• Idiopathic intracranial hypertension (IIH) is often associated with specific risk factors.
• A critical, less common consideration is the co-occurrence of IIH with malignancies.
• Elevated intracranial pressure and cerebrospinal fluid protein can indicate underlying neoplastic processes.

Purpose of the Study:

• To highlight the rare presentation of primary diffuse leptomeningeal melanomatosis in a pediatric patient.
• To emphasize the importance of considering malignancy in cases of IIH with elevated CSF protein.
• To underscore the necessity of timely diagnosis for effective management.

Main Methods:

• Case report of a pediatric patient with idiopathic intracranial hypertension.
• Clinical evaluation for underlying malignancies.
• Cerebrospinal fluid analysis for protein levels.
• Diagnostic confirmation through biopsy and histopathological examination.

Main Results:

• The patient presented with symptoms suggestive of increased intracranial pressure.
• Cerebrospinal fluid analysis revealed elevated protein levels.
• The underlying malignancy, primary diffuse leptomeningeal melanomatosis, was confirmed via biopsy.
• This rare condition was identified in the pediatric population.

Conclusions:

• Malignancy should be considered in the differential diagnosis of IIH, particularly with elevated CSF protein.
• Primary diffuse leptomeningeal melanomatosis is an exceptionally rare cause of these findings in children.
• Prompt clinical suspicion, biopsy, and expert pathological interpretation are crucial for diagnosis.