Abstract | BACKGROUND: Frontoethmoidal schwannomas are rare. No case manifesting exertional cerebrospinal fluid ( CSF) rhinorrhea has ever been reported to the best of our knowledge. CASE DESCRIPTION: In this report, we describe an extremely rare case of frontoethmoidal schwannoma extending through the olfactory groove with exertional CSF rhinorrhea as the initial symptom. A 50-year-old woman was presented to our clinic for frequent nasal discharge on exertion. A postcontrast computed tomographic scan demonstrated heterogeneously enhanced tumor from the anterior cranial fossa to the anterior ethmoid sinus. A gadolinium-enhanced T1-weighted magnetic resonance image revealed a well-defined heterogeneously enhanced tumor situated in the midline anterior cranial fossa and anterior ethmoid sinus. After the resection, the defect of the right anterior skull base was reconstructed with a fascia graft and adipose tissue taken from the abdomen, as well as a pedicle periosteum flap. A histologic examination revealed the tumor as schwannoma. Her rhinorrhea completely resolved. She regained her sense of smell and taste 1 month after the operation. CONCLUSION: According to previous reports, olfactory groove, and paraolfactory groove/periolfactory groove schwannomas can be divided into 4 types: subfrontal, nasoethmoidal, frontoethmoidal, and ethmofrontal. Among them, a frontoethmoidal schwannoma can manifest exertional CSF rhinorrhea as an initial symptom.
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Authors | Yuichiro Yoneoka, Katsuhiko Akiyama, Yasuhiro Seki, Go Hasegawa, Akiyoshi Kakita |
Journal | World neurosurgery
(World Neurosurg)
Vol. 111
Pg. 381-385
(Mar 2018)
ISSN: 1878-8769 [Electronic] United States |
PMID | 29330076
(Publication Type: Case Reports, Journal Article, Review)
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Copyright | Copyright © 2018 Elsevier Inc. All rights reserved. |
Topics |
- Cerebrospinal Fluid Rhinorrhea
(complications, diagnosis, surgery)
- Diagnosis, Differential
- Ethmoid Sinus
- Female
- Frontal Sinus
- Humans
- Middle Aged
- Neurilemmoma
(complications, diagnosis, surgery)
- Paranasal Sinus Neoplasms
(complications, diagnosis, surgery)
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