SURGICAL TREATMENT RESULTS OF EPIDERMOID CYSTS IN THE CEREBELLOPONTINE ANGLE

Đỗ Trọng Phước1,, Lê Viết Thắng1, Dư Đỗ Văn Trung Hiếu2, Nguyễn Minh Anh1, Nguyễn Kim Chung2
1 University Medical Center Ho Chi Minh City
2 Cho Ray Hospital

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Abstract

Objectives: To evaluate clinical features, imaging and factors related to surgical treatment results of epidermoid cysts in the cerebellopontine angle. Methods: A cross-sectional descriptive study of 34 cases of CPA epidermoid cysts diagnosed and treated with microsurgery at the Neurosurgery Department - Cho Ray Hospital from February 2018 to February 2021. Results: The mean age of the research group was 41,1 ± 8,7, male/female ratio is approximately 0,4/1. The most common hospital admission symptoms were headache (29,4%), V neuralgia (26,5%) and tinnitus (20,6%). Total tumor removal reached 41,2%. After 6 months of postoperative follow – up, the most improved symptoms were hemiparesis (100%), facial hemispasm (75%) and V neuralgia (72,2%). New neurological deficits at 6 months were 14,7%, of which cerebellar syndrome accounted for 5,9%, paralysis of the VI, VII and VIII nerves each equivalent to 2,9%. Complications after surgery were all less than 10%, cerebellar contusion and hemorrhage accounted for the highest rate of 8,8%. Conclusion: CPA epidermoid cysts with diverse clinical manifestations. Microsurgery to remove the entire tumor is the ideal treatment to increase the rate of symptom improvement. However, if tumors are adherent to surrounding important structures, surgeon can actively leave this part in order to preserve function after surgery.

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References

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