Abstract
We report a rare case of nasal glial heterotopia in an adult. After the surgery, frontal lobe cerebral hemorrhage developed. A 58-year-old man had unilateral nasal obstruction that progressed for one year. He had been treated for hypertension, chronic heart failure, and cerebral infarction with aspirin and warfarin. A computed tomography scan showed that the tumor occupied the right nasal cavity and the sinuses with small defect in the cribriform plate. The tumor was removed totally with endoscopy. After the operation, the patient developed convulsions and frontal lobe cerebral hemorrhage. The hemorrhage site was located near a defect in the cribriform plate. Nasal glial heterotopia is a rare developmental abnormality, particularly rare in adult. Only few cases were reported. We could not find any report of adult nasal glial heterotopias that developed cerebral hemorrhage as a complication of the surgery.
Highlights
Known as nasal glioma, represents a collection of normal glial tissue in an abnormal location; the tissue is isolated from the nervous system without intracranial connection [1, 2]
We found that the hemorrhage site was located near a defect in the cribriform plate
Nasal glial heterotopia is a rare developmental abnormality typically seen at birth or in early childhood
Summary
Known as nasal glioma, represents a collection of normal glial tissue in an abnormal location; the tissue is isolated from the nervous system without intracranial connection [1, 2]. Nasal glial heterotopia is a rare congenital lesion that is thought to be the result of abnormal embryonic development. It is frequently diagnosed in newborns or infants, it is rarely found in adults. These tumors are composed of astrocytes and neuroglial cells interlaced with fibrovascular connective tissue that is covered by the epithelium or respiratory mucosa [3]. From CT findings, 15%– 20% of patients have a defect in the cribriform plate [4, 5]. We found that the hemorrhage site was located near a defect in the cribriform plate
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