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Query: UMLS:C0018681 (headache)
 56,091 document(s) hit in 31,850,051 MEDLINE articles (0.00 seconds)

We report a rare intracisternal C1 posterior root neurinoma in a 35-year-old man without neurofibromatosis who presented with headache, nuchal pain, bilateral motor weakness of the upper extremities, and numbness in the right distal upper extremity. CT and MRI study showed a 20-mm intracisternal lesion at the foramen magnum. At surgery, there was an anastomosis between the C1 posterior root and a spinal accessory nerve at the site of the tumor; the root from the collateral sulcus of this C1 root was absent. Postoperatively, the patient remains free of symptoms. Foramen magnum neurinomas have been described as accessory nerve tumors. We present new anatomical consideration regarding this lesion.
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PMID:Intracisternal neurinoma of the C1 posterior root. 1615 4

Solitary fibrous tumours (SFT) of the central nervous system are rare. They resemble meningioma in clinical presentation, imaging features and appearance at surgery. Schwannoma, hemangiopericytoma and other spindle cell mesenchymal neoplasms should also be considered in the differential diagnosis. Although the histogenesis of this tumour is still debated, strong CD34 reactivity of the tumour cells suggests that SFT is mesenchymal. We present the clinical, radiological, and pathological features of an SFT located in the cerebellopontine angle (CPA). A 55-year-old female presented with 6 months of headache. The MRI scan showed a contrast enhancing ovoid mass in the left CPA. At craniotomy, the tumour was completely resected. Histolopathological diagnosis was of meningioma. Three years later, the symptoms recurred and an MRI scan demonstrated tumour recurrence. A repeat craniotomy was performed and the lesion was again completely excised. Tumour morphology on histopathology and immunoreactivity for CD34 of the tumour cells supported the diagnosis of SFT. Review of the original tumour also disclosed immunoreactivity for CD34. Ki67 labeling indices were less than 1% in both tumours.
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PMID:Recurrent solitary fibrous tumour in the cerebellopontine angle. 1616 31

We report 3 cases of benign retroperitoneal schwannoma, of whom one presented with flank pain with hematuria, one presented with headache and secondary hypertension and one presented with recurrent renal colicky pain. Two patients were treated by open surgical excision of the tumor with nephrectomy of the corresponding side because the tumors were densely adhered to the kidney and one case treated by laparoscopic resection of the mass only. The diagnosis of schwannoma was established postoperatively after histopathological examination and immunohistochemistry. All patients are doing well in follow-up.
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PMID:Atypical presentations of benign retroperitoneal schwannoma: report of three cases with review of literature. 1630 40

A 42-year-old woman complained of tinnitus, hearing loss and headache. Many years ago she had been treated for a vestibular schwannoma and cutaneous neurofibroma. MRI revealed bilateral vestibular schwannomas and multiple meningiomas due to neurofibromatosis type 2.
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PMID:[Diagnostic image (252). A woman with complaints of tinnitus, hearing loss and headache]. 1632 Jun 67

Schwannoma is a benign neoplasm originating from schwann cells of the peripheral nerve sheath, and its occurrence in the nasal cavity and paranasal sinuses is rare. We present a case of nasal schwannoma originating from the left nasal cavity, accompanied by bilateral nasal polyposis. A 66-year-old man presented with complaints of progressive left nasal obstruction, hyposmia, and headache. Anterior rhinoscopic and endoscopic examinations revealed a mass that almost completely filled the left nasal cavity. A polypoid mass was present in the right nasal cavity, as well. On computed tomography, the mass occupied the left ethmoidal cells, left maxillary sinus, left sphenoid sinus, and posterior area of the left nasal cavity. Endoscopic sinus surgery was performed under general anesthesia and the mass was completely removed via the nasopharynx because of its size. Endoscopic anterior ethmoidectomy was also performed in the right nasal cavity for nasal polyposis. Histopathological diagnosis of the left nasal mass was schwannoma. The patient was symptom-free with no recurrence after nine months.
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PMID:A case of intranasal schwannoma with bilateral nasal polyposis. 1634 Feb 92

Ophthalmoplegic migraine (OM) is a rare variant of migraine characterized by recurrent attacks of severe headache followed by oculomotor nerve palsy. The recent revision of the International Headache Classification has reclassified OM from a subtype of migraine, defined as a functional headache, to the neuralgia category. We describe a case of an 11-year-old girl with pathologically confirmed oculomotor nerve schwannoma who had been suffering from symptoms mimicking OM. For five years, she has been under treatment for OM, an initial diagnosis which was corroborated by brain magnetic resonance imaging (MRI). Usually, most OM attacks occur during one period in a lifetime and remit completely. In contrast, however, her attacks became more frequent and were not controlled by medication. After surgery, the frequency of OM attacks was reduced. From this experience, we hypothesize that optic nerve tumor is one condition that can mimic OM, without apparent signs suggestive of intracranial mass. To our knowledge, this is the first report to describe a pathologically confirmed case of oculomotor nerve schwannoma mimicking OM.
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PMID:Oculomotor nerve schwannoma mimicking ophthalmoplegic migraine. 1642 81

A 55-year-old woman presented with a longstanding history of headache and personality change. Preoperative imaging suggested an olfactory groove meningioma invading the posterior nasal space. Following surgical removal of the lesion histopathology confirmed the presence of both a nasal schwannoma and an olfactory groove meningioma. This dual pathology may represent a variation of neurofibromatosis type 2 (NF-2).
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PMID:Combined nasal and skull base pathology: adjacent nasal schwannoma and olfactory groove meningioma. 1645 71

A diffuse-type giant cell tumor (DGCT) of the paravertebral region is a rare condition characterized by an ill-demarcated mass with facet joint involvement. We describe a case of extra-articular DGCT of the paravertebral cervical region without association to the facet joint. A 51-year-old male presented with a headache. Diagnostic imaging showed a dumbbell-shaped mass with enlargement of the right intervertebral foramen between C6 and C7. The tumor was completely resected in multiple fragments with the suspicion that it was a schwannoma. Histologically the tumor consisted chiefly of mononuclear histiocytoid cells, foamy macrophages and multinucleated giant cells, which led to a diagnosis of DGCT. The case alerts one to be aware that DGCT may originate from a paravertebral location as a soft-tissue mass without facet joint involvement.
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PMID:Extraarticular paravertebral diffuse-type giant cell tumor. 1652 34

Schwannomas are common in the central nervous system, but only a few cases in the pituitary fossa have been reported. Described here is a case of an intrasellar schwannoma associated with headaches and behavioural changes, which responded to subtotal excision of the lesion. The diagnosis of intrasellar schwannoma was made on the basis of a constellation of microscopic findings, especially histologic features and immunohistochemical markers. The clinical and laboratory presentation, surgical procedure used and microscopic findings are compared with those in the literature.
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PMID:Intrasellar pituitary schwannoma. 1686 Sep 86

Hemorrhagic vestibular schwannomas are rare entities, with only a few case reports in the literature during the last 25 years. The authors review the literature on vestibular schwannoma hemorrhage and the presenting symptoms of this entity, which include headache, nausea, vomiting, sudden cranial nerve dysfunction, and ataxia. A very unusual case is presented of a 36-year-old man, who unlike most of the patients reported in the literature, had clinically silent vestibular schwannoma hemorrhage. The authors also discuss the management issues involved in more than 1000 vestibular schwannomas treated at their institution during a 25-year period.
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PMID:Hemorrhagic vestibular schwannoma: an unusual clinical entity. Case report. 1711 24


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