sheath

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Related to carotid sheath: recurrent laryngeal nerve

sheath

1. Biology an enclosing or protective structure, such as a leaf base encasing the stem of a plant
2. the protective covering on an electric cable

sheath

[shēth]
(electricity)
A protective outside covering on a cable.
(electronics)
A space charge formed by ions near an electrode in a gas tube.
(electromagnetism)
The metal wall of a waveguide.
(science and technology)
A protective case or cover.

sheath

In reinforced concrete, an enclosure which encases posttensioned tendons to prevent their being bonded during the placement of concrete.
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References in periodicals archive ?
The wedged position of scalenus anterior between the carotid sheath and the brachial plexus/scalenus medius will also make differentiating between scalenus anterior and these structures difficult.
The posterior triangle of the neck: where is scalenus anterior?
All imaging protocols should contain anterior planar images from the ears through the inferior border of the heart to screen for ectopic adenomas, which can be located anywhere from the carotid sheath to the inferior cardiac border.
Parathyroid scintigraphy: optimizing preoperative localization
Exploration of the carotid sheath to the lateral pharyngeal wall may be undertaken to fully excise any tract that may not have been identified on preoperative imaging (1).
Branchial anomalies: a retrospective analysis in a tertiary care hospital
CLINICAL SIGNIFICANCE: From its origin, the aberrant muscle deviated laterally crossing in front of the common carotid artery (shown in photograph) to ascend in the anterior wall of carotid sheath.
An aberrant muscle in the neck--a case report
Contrast enhanced CT scan is the best initial diagnostic study to determine the size and extent of tumor, possible origin of tumor based on displacement of carotid sheath and preservation of parapharyngeal fat and to demonstrate degree of tumor vascularity.
Parapharyngeal schwannoma arising from lingual nerve--a rare case report
In the current case, the infiltrative nature of this mass along the carotid sheath suggested an extranodal process but revealed no additional specific findings.
Rosai-Dorfman disease presenting as an isolated extranodal mass of the carotid sheath: a case report
Vascular leiomyoma of the carotid sheath simulating a carotid body tumor.
Undifferentiated metastatic carcinoma and myoepithelioma: two rare causes of hypervascular masses of the parapharyngeal space
The fistulous tract ascends along the carotid sheath, then posterior to the common carotid artery, then superior to the superior laryngeal, hypoglossal, and vagus nerves; it finally opens into the piriform sinus.
A third branchial pouch cyst presenting as a lateral neck mass in an adult
1-3) To our knowledge, no solitary fibrous tumor arising in the carotid sheath has been reported until now.
Solitary fibrous tumor of the carotid sheath
It also extended medially into the parapharyngeal space anterior to the carotid sheath (figure 1, C).
Malignant peripheral nerve sheath tumors of the head and neck: two cases and a review of the literature
The sternocleidomastoid muscle was then retracted laterally, exposing the carotid sheath.
Postauricular abscess leading to internal jugular vein thrombosis: a case report

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