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Skull tumor simulating sinus pericranii. Case report

S Manaka, M Izawa, H Nawata

    Journal of Neurosurgery
    |May 1, 1977
    PubMed
    Summary
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    A rare skull tumor mimicking sinus pericranii was identified. Surgical exploration revealed it was an eosinophilic granuloma with hemorrhage and an epidural hematoma.

    Area of Science:

    • Neurosurgery
    • Pathology
    • Pediatric Oncology

    Background:

    • Sinus pericranii is a rare congenital anomaly involving an extracranial venous communication with the superior sagittal sinus.
    • Skull tumors can present with varied clinical and radiological features, sometimes mimicking other conditions.

    Observation:

    • A midline occipital skull lesion was initially suspected to be sinus pericranii based on diagnostic criteria.
    • The lesion presented as a palpable mass with potential vascular involvement.

    Findings:

    • Intraoperative findings confirmed the lesion was not sinus pericranii but an eosinophilic granuloma.
    • Histopathological examination revealed eosinophilic granuloma with significant intratumorous hemorrhage.
    • An associated epidural hematoma was also identified.

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    Implications:

    • This case highlights the importance of considering rare differentials in skull lesions.
    • Eosinophilic granuloma can present atypically, mimicking vascular malformations like sinus pericranii.
    • Accurate diagnosis requires surgical exploration and histopathological confirmation, crucial for appropriate management of skull tumors.