Evidence map›Paper›PMID 34154970›Full record

ReviewBrazilian journal of otorhinolaryngology

Extracranial non-vestibular head and neck schwannomas: a case series with the review of literature.

Deviprasad Dosemane, Sushmitha Kabekkodu, Bhagyashree Jaipuria, Suja Sreedharan, Vijendra Shenoy

Open access · goldAbstract readReviewCase Reports
In one paragraph

Review in Brazilian journal of otorhinolaryngology. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 11 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
11citing papers in PubMed, 1 pooled it
3.0field-weighted citation impact, top 7% of its field
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

11 citing papers in PubMed, 1 synthesis or guideline pooled it, 39 citations in OpenAlex.

  1. Pooled it
  2. Article
  3. Article
  4. Article
  5. Head and Neck Schwannoma Management: A Retrospective Study from South India.Indian journal of otolaryngology and head and neck surgery : official publication of the Association of Otolaryngologists of India · 2025
    Article
  6. Article
  7. Comprehensive analysis of radiological and surgical predictors in cervical sympathetic schwannomas: a novel staging approach and its implications.European archives of oto-rhino-laryngology : official journal of the European Federation of Oto-Rhino-Laryngological Societies (EUFOS) : affiliated with the German Society for Oto-Rhino-Laryngology - Head and Neck Surgery · 2025
    Article
  8. Article
  9. Article
  10. Review
  11. Article
4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

5 authors at 1 institution in 1 country.

Deviprasad DosemaneKasturba Medical College Mangalore, Manipal Academy of Higher Education, Department of Otorhinolaryngology & Head and Neck Surgery, Karnataka, India.
Sushmitha KabekkoduKasturba Medical College Mangalore, Manipal Academy of Higher Education, Department of Otorhinolaryngology & Head and Neck Surgery, Karnataka, India. Electronic address: sushmitha.k@manipal.edu.
Bhagyashree JaipuriaKasturba Medical College Mangalore, Manipal Academy of Higher Education, Department of Otorhinolaryngology & Head and Neck Surgery, Karnataka, India; Mumbai, Maharashtra, India.
Suja SreedharanKasturba Medical College Mangalore, Manipal Academy of Higher Education, Department of Otorhinolaryngology & Head and Neck Surgery, Karnataka, India.
Vijendra ShenoyKasturba Medical College Mangalore, Manipal Academy of Higher Education, Department of Otorhinolaryngology & Head and Neck Surgery, Karnataka, India.
Manipal Academy of Higher Education · IN

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

introductionSchwannomas are tumous that arise from Schwann cells. Schwannoma is one of the differential diagnosis for lateral neck swelling.

objectiveIn this study, we aim to describe the incidence, presenting clinical features and management of extracranial, non-vestibular schwannomas of head and neck region, along with the review of the literature.

methodsPatients treated at our tertiary care hospital for head and neck schwannomas for the past 15 years were included in the study. A review of literature on the extracranial head and neck schwannoma was also done.

resultsTwenty-five cases were assessed in this study. Nineteen cases presented as a neck swelling during the initial evaluation. Vagus nerve was the most common nerve of origin, followed by the cervical sympathetic plexus. A rare presentation arising from brachial plexus C5 nerve root was also encountered. A few rare cases of schwannomas arose from the nasal cavity, paranasal sinuses, and oral cavity. Surgical excision was done in all the cases with histopathology suggestive of schwannoma. The nerve of origin of the tumor was identified in nineteen patients. Among them, 11 (58%) were from the vagus nerve, 7 (37%) from the cervical sympathetic chain, and 1 (4%) from the brachial plexus C5 nerve root.

conclusionA long-standing unilateral neck mass is the most common presenting complaint in head and neck schwannoma. The diagnosis is mainly based on clinical features and investigations such as imaging. The mainstay of treatment is complete surgical excision. The diagnosis is confirmed on the histopathological study after excision of the lesion. Due to the proximity of the tumor with the involved nerve, palsy may occur. Hence, an accurate preoperative diagnosis of schwannoma is essential.

Indexed as

Head and Neck NeoplasmsNeurilemmomaDiagnosis, DifferentialHumansNeckVagus NerveHistopathologyMyelin sheathNeurilemmomaSchwannomaVagus nerve

Identifiers

PMID34154970
PMCPMC9756070
OpenAlexW3170924582

What OpenQuestion holds

Textmetadata
LicenceCC BY
Read underepoch 390

Registered trials

None linked

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.