Solitary olfactory groove schwannoma: case report with review of the literature

Praharaj, S. S.; Vajramani, Girish; Santosh, Vani; Shankar, S. K.; Kolluri, Sastry

doi:10.1016/s0303-8467(98)00058-4

Cited by 31 publications

(21 citation statements)

References 7 publications

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“…[1][2][3][4][6][7][8][9][10][11][14][15][16] Olfactory groove schwannomas may originate from either the olfactory bulb and nerve, or an intracranial peripheral' nerve such as the anterior ethmoid nerve, or the meningeal branches of the trigeminal nerve. The origin of the tumor in Cases 2, 7, and 12 was speculated as the anterior ethmoid nerve or the meningeal branches of the trigeminal nerve, since the intact olfactory nerve and bulb could be identified.…”

Section: Discussionmentioning

confidence: 99%

“…However, the optic and olfactory nerves do not have a Schwann cell layer and so schwannoma cannot develop. Solitary schwannomas arising from around the olfactory groove are rare with only 13 reported cases, [1][2][3][4][6][7][8][9][10][11][14][15][16] although some cases are associated with von Recklinghausen disease. 12) We report a case of a young male with a schwannoma incidentally detected after complaints of slight headache, and present the characteristic radiological findings with discussion of the tumor origin.…”

Section: Introductionmentioning

confidence: 99%

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Olfactory Groove Schwannoma-Case Report-

Murakami

Tsukahara

Nakakuki

et al. 2004

Neurol. Med. Chir.(Tokyo)

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Fig. 1 T 1 -weighted magnetic resonance imageswith gadolinium (A: axial section, B: sagittal section) demonstrating a subfrontal tumor with homogeneous enhancement in the left anterior cranial fossa. 191Neurol Med Chir (Tokyo) 44, 191¿194, 2004 Olfactory Groove Schwannoma AbstractA 30-year-old man presented with a 2-year history of intermittent headache. No neurological deficit was detected. Computed tomography (CT) and magnetic resonance imaging showed a tumor with a diameter of 2.5 cm in the left anterior skull base associated with bone scalloping on three-dimensional CT. Angiography showed a hypovascular tumor. Craniotomy demonstrated a tumor in the region of the left olfactory groove attached to the anterior part of the cribriform plate. The histological diagnosis was schwannoma. Schwannoma arising from near the olfactory groove is rare, with only 13 other cases reported. The precise origin of these tumors is not well understood, but the tumor in this case probably arose from the fila olfactoria, because the olfactory bulb was involved in the tumor, whereas the olfactory tract remained intact.

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Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Olfactory Groove Schwannoma-Case Report-

Murakami

Tsukahara

Nakakuki

et al. 2004

Neurol. Med. Chir.(Tokyo)

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“…Intracranial schwannomas represent approximately 6% to 8% of all intracranial tumors and usually arise from the Schwann cell layer of vestibular branch of eighth nerve or less commonly from the fifth nerve, seventh nerve and lower cranial nerves 1,[6][7][8]10,15) . However, the olfactory and optic nerve lack a Schwann cell layer and thus are not prone to tumors from these nerves 14) .…”

Section: Discussionmentioning

confidence: 99%

“…In terms of how anterior cranial fossa schwannoma arise, several theories of the origin have been put forth. Various theories regarding the possible origin of these tumors are centered around the developmental and non-developmental origins 1,4,5,[8][9][10] . The developmental theories suggest either transformation of mesenchymal pial cell into ectodermal Schwann cells or migration of the neural crest cells within the substance of the central nervous system.…”

Section: Discussionmentioning

confidence: 99%

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Olfactory Schwannoma-Case Report-

Choi

Sung

Song

et al. 2009

J Korean Neurosurg Soc

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J Korean Neurosurg Soc 45 : [103][104][105][106] 2009 Intracranial schwannomas preferentially arise from the vestibular branch of the eighth nerve, and rarely from the trigeminal nerve, facial nerve, and lower cranial nerves. Anterior cranial fossa schwannomas are extremely uncommon and few details about them have been reported. The patient was a 39-year-old woman whose chief complaints were anosmia and frontal headache for 2 years. The gadolinium (Gd)-enhanced magnetic resonance imaging (MRI) showed an extra-axial mass from ethmoid sinus to right frontal base region near the midline, with solid enhancement in lower portion and multicystic formation in upper portion. The tumor was totally resected via basal subfrontal approach. At operation, the tumor had cystic portion with marginal calcification and the anterior skull base was destructed by the tumor. The olfactory bulb was involved, and the tumor capsule did not contain neoplastic cells. The histopathological diagnosis was schwannoma. We report a rare case of anterior cranial fossa schwannoma with literature review.

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