Parapharyngeal Space Tumors—What Lies in This Hidden Space?

Shanmugam, Subbiah; Susikar, Sujay; Vijayalakshmi, G.

doi:10.1007/s12070-023-03551-5

Cited by 1 publication

(1 citation statement)

References 5 publications

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“…The space comes into direct contact with the skull base posterior to the styloid process and is continuous with the carotid sheath and the lateral wall of the pharynx. The adjacent relationships explain why masses in the carotid sheath frequently invade the skull base and pharyngeal wall [ 17 , 18 ]. CBTs are the most common lesions of the PPS and have distinct growth patterns and imaging characteristics [ 19 ].…”

Section: Discussionmentioning

confidence: 99%

Novel insights into the classification of Shamblin III carotid body tumors from a neurosurgical perspective

Ma,

Si,

Sun

et al. 2024

Neurosurg Rev

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Background and purpose The classic Shamblin system fails to provide valuable guidance in many Shamblin’s III carotid body tumors (III-CBTs) due to the variable forms of carotid arteries and the complex anatomic relationships in parapharyngeal space. We proposed a modified classification to separately divide III-CBTs into different subgroups on the basis of arterial relevant features and anatomical relevant features. Materials and methods From 2020 to 2023, a total of 129 III-CBTs at a single institution were retrospectively analyzed. All cases were independently classified as arterial-relevant and anatomical-relevant subgroups. The pre-, peri- and postoperative data were summarized and compared accordingly. Results Among the 129 cases, 69 cases were identified as “Classical type”, 23 cases as “Medial type”, 27 cases as “Lateral type” and 10 cases as “Enveloped type” according to arterial morphologies. Besides, 76 cases were identified as “Common type”, 15 cases as “Pharynx- invasion type”, 18 cases as “Skull base-invasion type” and 20 cases as “Mixed type” according to anatomical relationships. “Enveloped type” of tumors in arterial-relevant classification and “Mixed type” of tumors in anatomical-relevant classification are the most challenging cases for surgeons with the lowest resection rate, highest incidence of carotid arteries injury and postoperative stroke. Conclusion The modified classifications provide comprehensive understanding of different III-CBTs which are applicable for individualized treatment in clinical practice.

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Section: Discussionmentioning

confidence: 99%