Estrada MJ, Sánchez RG, Farías GR, Calderón GAL

Language: Spanish
References: 11
Page: 405-408
PDF size: 167.92 Kb.

ABSTRACT

Intracranial schwannomas account for up to 8 % of all primary brain tumors. The most common site for schwannomas is the vestibular portion of the eighth cranial nerve. Intraparenchymal schwannomas of the central nervous system are rare; even more rare is intraventricular location, with only seven cases reported in the literature. Of these intraventricular tumors, only three have been described in the IV ventricle. A case of IV ventricle schwannoma is reported. A 36-year-old woman presented with right cerebellar syndrome, and a computerized scan demonstrated a well-delimited, sausage-like, isodense tumor. Tumor had a vascular pedicle originating from telovelotonsillar segment of right postero-inferior cerebellar artery, which was completely removed. Possible origin of this tumor is discussed and relevant literature is reviewed.

REFERENCES

1. 1. Kuratsu J, Takeshima H, Ushio Y. Trends in the incidence of primary intracranial tumors in Kuma-moto, Japan. Int J Clin Oncol 2001;6(4):183-191.

2. 2. Russell DS, Rubinstein LJ. Pathology of tumors of the nervous system. Fourth edition. London: Edward Arnold; 1977. p. 51-52,372-379.

3. 3. Casadei GP, Komori T, Scheithauer B, Miller G, Parisi E, Kelly P. Intracranial parenchymal schwannoma. J Neurosurg 1993;79:217-222.

4. 4. Sharma MC, Karak AK, Gaikwad SB, Mahapatra AK, Mehta VS, Sudha K. Intracranial intraparenchymal schwannomas: A series of eight cases. J Neurol Neurosurg Psychiatry 1996;60:200-203.

5. 5. Barbosa MD, Rebelo O, Barbosa P, Goncalves J, Fernandes R. Cystic intraventricular schwannoma: A case report and review of the literature. Neurocirugia (Astur) 2001;12(1):56-60.

6. 6. Redekop G, Elisevich K, Gilbert J. Fourth ventricular schwannoma. J Neurosurg 1990,73:777-781.

7. 7. Weiner HL, Zagzag D, Babu R, Weinreb HJ, Ranso-hoff J. Schwannoma of the fourth ventricle present-ing with hemifacial spasm. A report of two cases. J Neurooncol 1993;15(1)37-43.

8. 8. Ezura M, Ikeda H, Ogawa A, Yoshimoto T. Intra-cerebral schwannoma: Case report. Neurosurgery 1992;30(1):97-100.

9. 9. Huang P, Zagzag D, Vallo B. Intracranial schwannoma presenting as a subfrontal tumor. Case report. Neuro-surg 1997;40:194-197.

10. Riggs HE, Clary WU. A case of intramedullary sheath cell tumor of the spinal cord. Consideration of vascular nerves as a source of origin. J Neuropathol Exp Neurol 1957;16:332-336.

11. Curati WL, Graif M, Kingsley DPE, King T, Scholtz CL, Steiner RE. MRI in acustic neuroma. A review of 35 patients. Neuroradiology 1986;28:208-214.