Transcranial Resection of Olfactory Neuroblastoma

Chih-Chun Wang; Yao-Liang Chen; Yung-Shin Hsu; Shih-Ming Jung; Sheng-Po Hao

doi:10.1055/s-2005-872046

Skull Base, Table of Contents

Skull Base 2005; 15(3): 163-171
DOI: 10.1055/s-2005-872046

ORIGINAL ARTICLE

Transcranial Resection of Olfactory Neuroblastoma

Chih-Chun Wang¹ , Yao-Liang Chen² ^, ³ , Yung-Shin Hsu⁴ , Shih-Ming Jung² ^, ⁵ , Sheng-Po Hao¹ ^, ²

¹Departments of Otolaryngology Head and Neck Surgery, Chang Gung Memorial Hospital and Chang Gung University, Taipei, Taiwa
²Departments of Head and Neck Oncology (II), Chang Gung Cancer Center, Chang Gung Memorial Hospital and Chang Gung University, Taipei, Taiwa
³Departments of Radiology, Chang Gung Memorial Hospital and Chang Gung University, Taipei, Taiwa
⁴Departments of Neurosurgery, Chang Gung Memorial Hospital and Chang Gung University, Taipei, Taiwa
⁵Departments of Pathology, Chang Gung Memorial Hospital and Chang Gung University, Taipei, Taiwan

Abstract

ABSTRACT

From February 1995 to August 2004 at Chang Gung Memorial Hospital and Chang Gung University, eight patients with an olfactory neuroblastoma underwent transcranial resection alone. The transcranial surgical technique consisted of a bicoronal incision, followed by a standard frontal craniotomy with or without a separated orbital bar osteotomy. The tumor could be removed en bloc transcranially after the cranial base osteotomy according to the tumor extent delineated by preoperative magnetic resonance imaging and intraoperative findings. The defect in the floor of the anterior cranial fossa was reconstructed with a galeopericranial flap. Sinoscopy should compensate rather than compete with the transcranial approach. With thorough knowledge of the basic topographic anatomy of the anterior cranial base, transcranial resection can provide adequate surgical exposure to facilitate oncologically sound resection and to execute reliable skull base reconstruction in selected patients with an olfactory neuroblastoma. A transcranial approach alone may further decrease the rate of surgical morbidity by omitting the facial incision and osteotomy.

KEYWORDS

Olfactory neuroblastoma - transcranial resection - anterior skull base

Full Text

References

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Sheng-Po HaoM.D. F.A.C.S. F.I.C.S.

5, Fu-Hsing St., Kwei-Shan Hsiang

Taoyuan Hsien, Taiwan, R. O. C

Email: shengpo@adm.cgmh.org.tw