Extracranial schwannoma in the carotid space: A retrospective review of 91 cases

Abstract

In the carotid space, schwannomas of the vagus nerve are usually located below the hyoid bone, whereas schwannomas of the sympathetic nerve more commonly arise from the suprahyoid compartment. Accurate preoperative diagnosis and the intracapsular enucleation surgical approach decreased the incidence of postoperative morbidity. © 2016 Wiley Periodicals, Head Neck 39: 42-47, 2017.

Fine‐needle aspiration cytology versus core‐needle biopsy for the diagnosis of extracranial head and neck schwannoma

“…2,3,7,15 However, in 28 cases with satisfactory specimens in the present study, the sensitivity was 64.3% (18/28), which represents an acceptable diagnostic performance. These results were similar to those of previous studies that evaluated FNAC for the diagnosis of schwannoma, which reported unsatisfactory specimen rates of 36%-50% and sensitivity rates of 0%-40%.…”

“…These results were similar to those of previous studies that evaluated FNAC for the diagnosis of schwannoma, which reported unsatisfactory specimen rates of 36%-50% and sensitivity rates of 0%-40%. 2,3,7,15 However, in 28 cases with satisfactory specimens in the present study, the sensitivity was 64.3% (18/28), which represents an acceptable diagnostic performance. Therefore, we posit that the challenge of diagnosing schwannoma using FNAC is primarily attributed to the difficulty of harvesting satisfactory specimens and not to the evaluation of microscopic findings per se.…”

Clinical diagnosis and treatment outcomes for parapharyngeal space schwannomas: A single‐institution review of 21 cases

“…Diagnostic performance of ultrasound‐guided FNAC for PPS tumors was shown to be relatively low . Moreover, no studies have shown the usefulness of FNAC in cervical schwannomas, and the accuracy of FNAC has been reported to be 20.0%‐30.3% . FNAC is likely not essential in cases of suspected schwannoma, because cell sampling per se is not only very difficult due to strong intercellular binding but also carries the risk of injury of the involved nerve.…”

“…In recent years, the concept of intracapsular enucleation, which is based on technical ingenuity, has become popular because it can potentially preserve neural function. Application of intracapsular enucleation for cervical schwannomas has been reported to result in a decrease in the incidence of postoperative neurological deficits in the nerve of origin . However, no study performed to date has investigated differences in the efficacy of extirpation methods, including intracapsular enucleation, in terms of the occurrence of postoperative neurological complications exclusively in PPS schwannomas.…”

Surgical anatomy of the parapharyngeal space: Multiperspective, quantification‐based study

“…11,[26][27][28][29][30][31][32][33][34][35][36][37] Benign lesions are suitable for extracapsular enucleation or close-margin dissection (also called extracapsular dissection) according to the presence of a capsule and tendency to local invasion. 11,[26][27][28][29][30][31][32][33][34][35][36][37] Benign lesions are suitable for extracapsular enucleation or close-margin dissection (also called extracapsular dissection) according to the presence of a capsule and tendency to local invasion.…”