Parapharyngeal Space

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Lymphoepithelioma Like Carcinoma of Parapharyngeal Space—A Case Report with Review of Literature

Lymphoepithelioma Like Carcinoma of Parapharyngeal Space—A Case Report with Review of Literature

Extra-nasopharyngeal lymphoepithelioma-like carcinomas (LELC) are uncommon epithelial tu- mors. A few isolated case reports and series are available in literature involving the larynx, pha- rynx, salivary gland, lung etc., but involvement in the parapharyngeal space has not yet been re- ported. We aim to highlight one such case that has a clinical and radiological characteristic of a benign lesion whilst the histopathology reveals an infiltrating neoplasm. The typical clinical ag- gressiveness of a classical LELC of extra-nasopharyngeal lesion as described in literature is not present in our case. Also seen is an uncommon finding of abnormal branching of left external ca- rotid artery. There is no standard treatment protocol for such a tumor; however, wide excision of this tumor in the parapharyngeal space via trans-cervical, trans-mandibular, trans-palatal ap- proach has shown good and satisfactory tumor control of the primary site so far.
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Case Report Extragingival peripheral ameloblastoma of the parapharyngeal space: a case report and review of the literature

Case Report Extragingival peripheral ameloblastoma of the parapharyngeal space: a case report and review of the literature

by the anterior region [2, 5]. The maxilla also is the most common site, especially the soft pala- tal tissue of the tuberosity area [2]. As we know, extragingival PA is extremely rare. Just 13 cases of PA were reported at the extragingival site. In the current report, we present the first case of extragingival PA located in the parapharyngeal space of a 52-year-old male and review the cur- rent literature regarding the clinical characteris- tic and differential diagnosis of extragingival PA. Patient provided written informed consent. Case report

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Primary synovial sarcoma of the parapharyngeal space: a clinicopathologic study of five cases

Primary synovial sarcoma of the parapharyngeal space: a clinicopathologic study of five cases

Parapharyngeal space (PPS) tumors comprise approxi- mately 0.5% of head and neck tumors [1]. Synovial sar- coma (SS) of the head and neck is rare, accounting for only less than 10% of all head and neck soft tissue sarco- mas [2]. Very few reports of primary parapharyngeal syn- ovial sarcoma (PPSS) have been published, and most of these reports have been based on histological and im- munocytochemical examination. In this study, we describe five cases of PPSS diagnosed with the assistance of histo- logical,immunocytochemistry and molecular pathology.

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Surgical Access to Parapharyngeal Space Tumours   The Manipal Experience

Surgical Access to Parapharyngeal Space Tumours The Manipal Experience

The surgical access to parapharyngeal space tumours is limited and difficult. This is because it is a blind space enclosing important neurovascular structures with the tumour occasionally arising from the nerve sheath itself. In view of the above, a careful meticulous dissection is required via a safe approach like the cervical, the cervicosubmaxillary or the cervicoparotid approach. Mandibulotomy is an option for better exposure and is the individual surgeon’s choice. Though few series have been earlier reported, recently not many reports are seen. We present our experience in 41 cases with the above approaches highlighting the use of CT scan, MRI, angiography, ultrasound and FNAC as a diagnostic tool. Attempts have also been made to correlate histopathologic report with surgical approach.
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A comparative study of parapharyngeal space tumors over a 7 year period experience in tertiary care hospital

A comparative study of parapharyngeal space tumors over a 7 year period experience in tertiary care hospital

In our study, middle aged male population was most commonly affected. Pleomorphic adenoma is the most common PPS tumour and prestyloid compartment is mostly affected by these tumors. As per the previous studies, transcervical approach is the first choice for excision of parapharyngeal space tumors. In our study, transoral approach is also a suitable and safe approach for prestyloid nonvascular lesions and trancervical approach can be reserved for postsyloid and malignant lesions. Funding: No funding sources

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The anatomical relation of the extracranial internal carotid artery in the parapharyngeal space

The anatomical relation of the extracranial internal carotid artery in the parapharyngeal space

The extracranial internal carotid artery (ICA) begins as an extension of the common carotid artery (CCA). It runs in the parapharyngeal space in an S-shaped course, then bends medially and heads toward the external opening of the carotid channel on the temporal bone. The dis- tance from the ICA to the palatine tonsil has a mean value of 10–20 mm posteriorly,whereas it is 23.5 mm from the Eustachian tube (ET). 1,2

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Case Report An organized hematoma in the right parapharyngeal space: a case report and literature review

Case Report An organized hematoma in the right parapharyngeal space: a case report and literature review

Abstract: Organized hematoma is a relatively common condition that can occur in various locations throughout the body. There have been sporadic reports of organized hematomas in the literature, reported in locations such as the maxillary sinus, thyroid gland, and subdural cavity, which are common in the head and neck. Studies have shown that the mechanism of organized hematoma formation may be related to trauma, surgery, hemorrhage, vascular disease, or hematological disease. The composition of organized hematomas is mostly identical, the center is formed by a large number of organized blood clots which are surrounded by granulation tissue and dense fibrous connective tissue. Parapharyngeal space (PPS) is a latent fascial space deep in the lateral superior neck of the pharynx. Pathological changes in the PPS are rare, and most of them are benign tumors. An organized hematoma in the PPS is extremely rare. Only one case has previously been reported. Here, we report a second case in which a fine needle aspiration biopsy indicated a benign adenoma in the right PPS. The findings help to expand the dif- ferential diagnosis of PPS tumors and deepen the understanding of PPS organized hematoma, a rare benign lesion.
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Concurrent pleomorphic adenoma in parapharyngeal space and submandibular gland

Concurrent pleomorphic adenoma in parapharyngeal space and submandibular gland

Pleomorphic adenoma (PA) is an epithelial tumor of complex morphology, possessing epithelial and myoepi- thelial elements being intermingled with mucoid, myxoid, or chondroid tissue arranged in a variety of pat- terns and embedded in a mucopolysaccharide stroma [1]. It is the commonest benign tumor of salivary glands [2,3], and accounts for 90% of all salivary gland tumors [3]. The submandibular gland is the second most common site of pleomorphic adenoma after the parotid gland [2,4]. It is also the most frequent benign tumor arising in submandibular gland [5,6]. Pleomorphic adenomas in the parapharyngeal space (PPS) can arise either de novo or may arise in the deep lobe of the parotid gland and extend through the stylomandibular tunnel into the PPS [7]. Tumors in the parapharyngeal space are rare and consti-
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Necrotizing Fasciitis of the Parapharyngeal Space with Carotid Artery Occlusion and Acute Hemiplegia

Necrotizing Fasciitis of the Parapharyngeal Space with Carotid Artery Occlusion and Acute Hemiplegia

Pediatrics 1984;73:343-347; necrotizing fasciitis, parapharyngeal space, deep neck infection, carotid artery occlusion, acute hemiplegia of childhood, anaerobic infec-.. tion.[r]

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Death by Thyroid Cancer: Series of Cases. January 2003-December 2017

Death by Thyroid Cancer: Series of Cases. January 2003-December 2017

The most frequent clinical presentation of thyroid cancer is a thyroid nodule, but, several research has reported different form of presentation like parapharyngeal space tumor with lung, brain and liver metastatic disease, this is the classic presentation of our patient with advance thyroid cancer that progress to death [33-36]. The lung metastatic disease causes respiratory failure leading to death, the same as expressed in our series [37].

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Original Article Obstructive sleep apnea syndrome caused by uncommon tumors of the upper aerodigestive tract

Original Article Obstructive sleep apnea syndrome caused by uncommon tumors of the upper aerodigestive tract

Seven patients underwent general anesthesia during surgery according to practice guidelines for the perioperative management of patients with obstructive sleep apnea by the American Society of anesthesiologists [13, 14]. One patient had undergone a previous biopsy of the nasopharynx under local anesthesia [9]. Two patients with parapharyngeal space tumors underwent surgery via a transoral approach (Figure 1), and one patient with an oropharyn- geal tumor underwent surgery via a thyrohyoid membrane approach (Figure 2). [ 18 F] 2-Fluoro-

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CT of Nasopharyngeal Carcinoma: Significance of Widening of the Preoccipital Soft Tissue on Axial Scans

CT of Nasopharyngeal Carcinoma: Significance of Widening of the Preoccipital Soft Tissue on Axial Scans

Involvement of pharyngeal mucosal space • Blunting of fossa of Rosenmuller • Thickening of levator veli palatini Involvement of parapharyngeal space • Parapharyngeal space obliterated • [r]

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Extraosseous Ewing's sarcoma arising from the pterygomandibular space

Extraosseous Ewing's sarcoma arising from the pterygomandibular space

EES arising in the head and neck is extremely rare. Although it has been reported in the orbit [4], scalp [5], face [6], nasal cavity [7], paranasal sinus [8], nasophar- ynx [9], parapharyngeal space [10,11], larynx [12], hard palate [13], submandibular gland [14], parotid gland [15], thyroid gland [16] and soft tissue of the neck [17], to our knowledge, there has been no documented case regard- ing involvement of the pterygomandibular space by EES. This article reports a rare case of EES originating from the pterygomandibular space with the submandibular space, mouth floor extension and describes the clinical, radiological, histopathological and immunohistochemi- cal features.
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Parapharyngeal Neck Schwannomas with Unusual Vascular Displacement

Parapharyngeal Neck Schwannomas with Unusual Vascular Displacement

of the retrostyloid parapharyngeal space [1, 2]. Carotid body tumors are rare neoplasms, although they represent about 65% of head and neck paragangliomas [1, 2]. These tumors are derived from embryonic neural crest cells and arise in the chemoreceptoric, nonchromaffine paraganglia at carotid bifurcation [1–3]. Epidemiologically they are common in young people, with female preponderance [2, 4]. Since these tumours are located at carotid bifurcation they typically cause splaying of internal and external carotid arteries which can be assessed with CT, MRI, Digital subtraction angiography and ultrasound colour Doppler [1]. This characteristic feature of carotid body tumors helps to distinguish it from other retro styloid pharyngeal mass lesions [1]. Carotid body tumours are hypervascular and enhance intensely on contrast enhanced CT and MRI scans [1].
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111In octreotide scintigraphy in the evaluation of head and neck lesions

111In octreotide scintigraphy in the evaluation of head and neck lesions

L neck mass L neck mass 2-cm parapharyngeal space mass incidental MR finding Bilateral neck masses Past medullary thyroid carcinoma, rising calcitonin levels Past medullary thyroid carci[r]

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Stroke Secondary to a Parapharyngeal Pleomorphic Adenoma – Case Report

Stroke Secondary to a Parapharyngeal Pleomorphic Adenoma – Case Report

Generally, parapharyngeal space (PPS) tumours are less than 1% of all head and neck tumours [1]. Most PPS tumours are benign (70-80%). The malignant ones are fewer. The post - styloid compartment lesions tend to be of neurogenic origin whereas the prestyloid ones arise from the minor salivary glands in the lateral pharyngeal wall or extensions of tumours of the deep lobe of the parotid [2]. Among the benign tumours of the PPS, the pleomorphic adenoma is the commonest [1]. We present a case of a left parapharyngeal mass which caused a cerebrovascular accident (CVA) and was excised transorally with resolution of the CVA. We believe that the left parapharyngeal tumour in our case was compressing on the ipsilateral carotid sheath and therefore by inference on the walls of the internal carotid artery thus limiting the blood supply to the left half of the brain. This led to the left brainstem infarct with the resultant right hemiparesis. The occluded vessel recanalized after the tumour was excised with resolution of
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DENTAL INFECTION PRESENTING WITH IPSILATERAL PARAPHARYNGEAL ABSCESS AND CONTRALATERAL ORBITAL CELLULITIS  A CASE REPORT

DENTAL INFECTION PRESENTING WITH IPSILATERAL PARAPHARYNGEAL ABSCESS AND CONTRALATERAL ORBITAL CELLULITIS A CASE REPORT

Parapharyngeal space is a critical area in the neck which may be easily infected by a dental infection (3, 4). Infection of the maxillary molar may spread through local tissue planes or venous channel to involve parapharyngeal space; resulting in the development of a parapharyngeal abscess. A dangerous complication of parapharyngeal abscess includes airway obstruction due to medial bulging of the pharyngeal wall and supraglottic oedema.

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Dermoids of the eustachian tube: CT and MR findings with histologic correlation

Dermoids of the eustachian tube: CT and MR findings with histologic correlation

The mass was approached through a combination of a postauricular tympanotomy and a modified neck dissec- tion. The pharyngeal component of the lesion was located under the area of the digastric muscle and was surrounded by a thick capsule that, when dissected, revealed a cystic, fleshy mass containing hair follicles. From the parapha- ryngeal space, the mass extended superolaterally into an enlarged eustachian tube, from which it was resected. A fleshy mass filled the mesotympanum and appeared to originate from the area of the hypotympanum and eusta- chian tube. The mastoid was filled with mucoid fluid; how- ever, no mass was noted in the epitympanum or the mas- toid. To ensure complete removal of the lesion, the eustachian tube was cannulated from the middle ear to the parapharyngeal space with a suction catheter.
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Imaging Characteristics of Schwannoma of the Cervical Sympathetic Chain: A Review of 12 Cases

Imaging Characteristics of Schwannoma of the Cervical Sympathetic Chain: A Review of 12 Cases

level of the carotid bifurcation. Three of them were purely suprahyoid, located entirely above the level of carotid bifurca- tion. In 10 patients, the fat in the parapharyngeal space was displaced anteriorly, while the visceral space was displaced medially. Nine of the 12 tumors displaced the ICA in the an- terior direction with 8 of them also displaying a component of lateral displacement (Figs 1 and 2). In 2 cases when the tumors were much smaller than average (measuring, 1.5 ⫻ 1 cm), the artery was in a neutral position compared with the contralat- eral side. In a single case, the ICA (along with the IJV) was displaced posterolaterally (Fig 3). The tumor separated the ICA from the IJV in 1 patient (Fig 4); the rest of the patients characteristically lacked such a separation of the vessels.
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Novel use of a Weerda laryngoscope for transoral excision of a cervical ganglioneuroma: a case report

Novel use of a Weerda laryngoscope for transoral excision of a cervical ganglioneuroma: a case report

We herein describe a case of ganglioneuroma that was found in the parapharyngeal space, an unusual location [3,5]. Complete excision was made possible by using a transoral approach with a novel use of the Weerda laryn- goscope. We also review the pertinent recent literature and discuss our findings.

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