Analysis of 55 Adult Cases Surgically Treated for Pontocerebellar Angle Tumors

Yıl 2023, Cilt: 9 Sayı: 3, 511 - 519, 31.08.2023

İbtahim Başar , Sinan Bahadır , Murat Yücel , Tevfik Yılmaz

https://doi.org/10.19127/mbsjohs.1307344

Öz

Objective: Pontocerebellar angle (PCA) tumors, although typically of benign nature, are of significant clinical and pathological importance. The aim of this study is to investigate the clinical and pathological characteristics of PCA tumors, as well as surgical outcomes, which hold a significant place in clinical practice.
Methods: 55 adult patients who underwent surgery for PCA tumors at the Department of Neurosurgery, Dicle University Faculty of Medicine, between 2013 and 2023 were included in the study. The clinical and pathological records of these patients were retrospectively reviewed.
Results: The age of the patients (17 male, 38 female) ranged from 18 to 75 years. According to pathological diagnosis, 23 cases were diagnosed as meningioma, 19 as schwannoma, 6 as epidermoid tumors, 2 as metastases, 1 as hemangioblastoma, 1 as hemangioma, 1 as medulloblastoma, 1 as neuroblastoma, and 1 as small round cell tumor. Gross total resection was achieved in all cases. Overall, 47.3% of the patients had one or more postoperative complications. Postoperative permanent facial palsy developed in 6 patients. The overall mortality rate was 9%.
Conclusion: PCA tumors constitute a significant group among intracranial tumors. Surgical treatment is an important option for the management of these tumors. Primary goal of the surgery is gross total resection which is feasible in today. Though postoperative complications are common, majority of them is temporary.

Anahtar Kelimeler

pontocerebellar angle, tumor, neoplasm, surgery, complication

Destekleyen Kurum

-

Proje Numarası

-

Teşekkür

-

Kaynakça

• Tomita T, Grahovac G. Cerebellopontine angle tumors in infants and children. Childs Nerv Syst 2015; 31(10):1739-50.
• Brackmann D, Arriaga M. Extra-axial neoplasms of the posterior fossa. In: Cummings C, Gates G, editors. Otolaryngology Head & Neck Surgery. Missouri: Mosby; 2018. p. 3294-313.
• Martinez-Perez R, Ung TH, Youssef AS. The 100 most-cited articles on vestibular schwannoma: historical perspectives, current limitations, and future research directions. Neurosurg Rev 2021; 44(6):2965-75.
• Little AS, Almefty KK, Spetzler RF. Endoscopic surgery of the posterior fossa: strengths and limitations. World Neurosurg 2014; 82(3-4):322-4.
• Phi JH, Wang KC, Kim IO, Cheon JE, Choi JW, Cho BK, et al. Tumors in the cerebellopontine angle in children: warning of a high probability of malignancy. J Neurooncol 2013; 112(3):383-91.
• Bonneville F, Savatovsky J, Chiras J. Imaging of cerebellopontine angle lesions: an update. Part 1: enhancing extra-axial lesions. Eur Radiol 2007; 17(10):2472-82.
• Izycka-Swieszewska E, Szurowska E, Kloc W, Rzepko R, Dubaniewicz-Wybieralska M, Skorek A, et al. Cerebellopontine angle tumours: radiologic-pathologic correlation and diagnostic difficulties. Folia Neuropathol 2006; 44(4):274-81.
• Musluman AM, Akgun C, Tanrıverdi O, Yılmaz İ, Aydın İ, Tanık C, et al. Vestibuler Schwannoma. Turk Norosir Derg 2016; 26:49-60.
• Aslan A, Kaymaz A. Diagnosis and Findings in Pontocerebellar Angle Tumors. In: Kaymaz AM, editor. Treatment Selection and Surgical Approaches in Pontocerebellar Angle Tumors. Ankara: Turkiye Clinics; 2018. p. 5-12.
• Samii M, Matthies C. Management of 1000 vestibular schwannomas (acoustic neuromas): hearing function in 1000 tumor resections. Neurosurgery 1997; 40(2):248-60; discussion 60-2.
• Mallucci CL, Ward V, Carney AS, O’Donoghue GM, Robertson I. Clinical features and outcomes in patients with non-acoustic cerebellopontine angle tumours. J Neurol Neurosurg Psychiatry 1999; 66(6):768.
• Tekkok IH, Suzer T, Erbengi A. Non-acoustic tumors of the cerebellopontine angle. Neurosurg Rev 1992; 15(2):117-23.
• Springborg JB, Poulsgaard L, Thomsen J. Nonvestibular Schwannoma Tumors in the Cerebellopontine Angle: A Structured Approach and Management Guidelines. Skull Base 2008; 18(04):217-27.
• Sekhar LN, Gormley WB, Wright DC. The best treatment for vestibular schwannoma (acoustic neuroma): microsurgery or radiosurgery? Am J Otol 1996; 17(4):676-82; discussion 83-9.
• Friedmann DR, Grobelny B, Golfinos JG, Roland JT, Jr. Nonschwannoma tumors of the cerebellopontine angle. Otolaryngol Clin North Am 2015; 48(3):461-75.
• Gezgin I, Yucetas C, Dogan A. Meningiomas of the Cerebellopontine Angle: Tips and Pearls for Safe Surgical Resection. Turk Neurosurg 2023; 33(3):458-64.
• Voss NF, Vrionis FD, Heilman CB, Robertson JH. Meningiomas of the cerebellopontine angle. Surg Neurol 2000; 53(5):439-47.
• Gopalakrishnan CV, Ansari KA, Nair S, Menon G. Long term outcome in surgically treated posterior fossa epidermoids. Clin Neurol Neurosurg 2014; 117:93-9.
• Samii M, Tatagiba M, Piquer J, Carvalho GA. Surgical treatment of epidermoid cysts of the cerebellopontine angle. J Neurosurg 1996; 84(1):14-9.
• Brackmann DE, Bartels LJ. Rare tumors of the cerebellopontine angle. Otolaryngol Head Neck Surg (1979) 1980; 88(5):555-9.