Schwannoma of the descending loop of the hypoglossal nerve: Case report

Pizzardi, Giulia; Pasqua, Rocco; Palumbo, Piergaspare; Vietri, F

doi:10.1016/j.ijscr.2017.03.005

Cited by 9 publications

(7 citation statements)

References 13 publications

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“…9 It has been suggested that en bloc resection of the nerve reduces the risk of recurrence, the need for repeat surgery, and the potential for sarcomatous transformation. 7,10 However, in another study, intracapsular enucleation was shown to preserve nerve function and no recurrence was seen in patients. 11 Our approach was to perform en bloc resection of the tumor and its origin tissue.…”

Section: Discussionmentioning

confidence: 96%

“…Hypoglossal schwannoma is a rare tumor among extracranial head and neck schwannomas, particularly when it originates from the descending loop of the hypoglossal nerve 5,7,8 . The current literature recommends surgical excision as the first‐line treatment for schwannoma.…”

Section: Discussionmentioning

confidence: 99%

“…For Schwannomas arising from other cranial nerves, excision of the mass en bloc with the entire nerve is the best option in order to achieve a curative treatment 9 . It has been suggested that en bloc resection of the nerve reduces the risk of recurrence, the need for repeat surgery, and the potential for sarcomatous transformation 7,10 . However, in another study, intracapsular enucleation was shown to preserve nerve function and no recurrence was seen in patients 11 .…”

Section: Discussionmentioning

confidence: 99%

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An unexpected complication of hypoglossal schwannoma surgery: Cerebrospinal fluid leakage—A case report and literature review

Asya,

Kuyumcu,

Gündoğdu

2023

Head & Neck

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BackgroundExtracranial hypoglossal schwannoma is a rare tumor primarily treated with surgical excision. This article aims to highlight the potential for unexpected complications intraoperatively, such as cerebrospinal fluid leakage from skullbase to neck.MethodsA previously healthy 23‐year‐old male presented with tongue numbness. Magnetic resonance imaging revealed a 17 × 20 mm nodular lesion adjacent to the cervical segment of the internal carotid artery. Surgical excision was scheduled due to suspicion of a neurogenic tumor.ResultsIntraoperatively, despite careful handling, cerebrospinal fluid leakage was observed. Manipulation of the mass caused detachment of proximal nerve fibers, potentially indicating avulsion of the hypoglossal nerve from the brainstem or nearby. Clear fluid leakage from the skull base was also noted.ConclusionThorough preoperative evaluation and patient education regarding potential complications are crucial. This article presents an unexpected complication encountered during surgical excision of extracranial hypoglossal schwannoma, emphasizing the need for awareness and preparedness in such cases.

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Section: Discussionmentioning

confidence: 96%

Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

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An unexpected complication of hypoglossal schwannoma surgery: Cerebrospinal fluid leakage—A case report and literature review

Asya,

Kuyumcu,

Gündoğdu

2023

Head & Neck

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“…Studies have shown that intracapsular enucleation preserves nerve function without recurrence (5,23). En bloc resection of the nerve has been suggested to reduce the risk of recurrence and potential for sarcomatous transformation (24). Adjuvant radiotherapy may be recommended in cases of residual tumor (2).…”

Section: Histopathological Examination Under Microscope A) Encapsulat...mentioning

confidence: 99%

Extracranial Hypoglossal Schwannoma: Case Report and Literature Review

DERKA,

EBELING,

PIETZKA

et al. 2024

In Vivo

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Background: Schwannomas are solitary neurogenic tumors originating from the myelin sheath of peripheral nerves. Extracranial hypoglossal schwannomas comprise <5% of all head and neck schwannomas and can mimic submandibular salivary gland tumors. Case Report: We report the diagnostic imaging, surgical treatment, and histopathological findings of a rare case of extracranial schwannoma of the hypoglossal nerve in a 73-year-old female, presented with an asymptomatic swelling in the left submandibular region that had been persisted for approximately three years. Conclusion: Accurate diagnosis of this rare clinical entity requires comprehensive diagnostics. The optimal therapeutic strategy is nerve-sparing surgical excision, although it can be challenging.

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“…Since De Martel and colleagues first described a hypoglossal schwannoma in 1933, only a few case reports of extracranial schwannomas have been described. The most common location of an extracranial hypoglossal schwannoma is in the parapharyngeal space of older women, and these schwannomas can mimic paragangliomas (2,3). In 1984, Kaye et al (4) proposed a classification based on the location of the schwannoma: intracranial (Type A), intracranial/extracranial (Type B), or extracranial (Type C).…”

Section: Introductionmentioning

confidence: 99%

Pediatric schwannoma of the hypoglossal nerve: a case report and narrative literature overview

Marcandella,

Boscarelli,

Murru

et al. 2024

Front. Oncol.

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Schwannomas are benign, slow-growing tumors originating from the Schwann cells of nerve sheaths. Extracranial schwannomas are rare, particularly in pediatric populations. Here, we report the case of a hypoglossal schwannoma in a 15-year-old male who experienced tongue paresthesia and fasciculations and difficulty swallowing two years before hospital admission. Magnetic resonance imaging showed an oval mass with sharp and regular limits of approximately 45 × 29 × 25 mm in the cranial portion of the right carotid adipose space, caudal to the right carotid and lateral foramen. The patient underwent surgery, and a histological examination confirmed a schwannoma of the hypoglossal nerve. Six months after surgery, the patient was symptom-free. The literature on schwannomas of the hypoglossal nerve is scarce, with only a few previously reported cases in the adult population. Despite their rarity, schwannomas should be considered in the differential diagnosis of masses located in the neck that present with lingual and occasionally auditory symptoms, even in pediatric patients. Surgical resection is recommended and has a low risk of long-term recurrence.

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Schwannoma of the descending loop of the hypoglossal nerve: Case report

Abstract: HighlightsSchwannomas of the descending loop of the hypoglossal nerve are extremely rare.They may masquerade a carotid body tumor at preoperative imaging.En bloc resection together with the descending branch ensures durable cure.

Cited by 9 publications

References 13 publications

An unexpected complication of hypoglossal schwannoma surgery: Cerebrospinal fluid leakage—A case report and literature review

An unexpected complication of hypoglossal schwannoma surgery: Cerebrospinal fluid leakage—A case report and literature review

Extracranial Hypoglossal Schwannoma: Case Report and Literature Review

Pediatric schwannoma of the hypoglossal nerve: a case report and narrative literature overview

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