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Patterns of invasion and routes of tumor entry into the mandible by oral squamous cell carcinoma

Identifieur interne : 008611 ( Main/Exploration ); précédent : 008610; suivant : 008612

Patterns of invasion and routes of tumor entry into the mandible by oral squamous cell carcinoma

Auteurs : James S. Brown [Royaume-Uni] ; Derek Lowe [Royaume-Uni] ; Nicholas Kalavrezos [Royaume-Uni] ; Jacob D'Souza [Royaume-Uni] ; Patrick Magennis [Royaume-Uni] ; Julia Woolgar [Royaume-Uni]

Source :

Head & neck [ 1043-3074 ] ; 2002.

RBID : Pascal:02-0250313

Descripteurs français

Pascal (Inist)
- Carcinome épidermoïde, Cavité buccale, Voie abord, Invasion, Mandibule, Résection chirurgicale, Prise décision, Technique, Extension, Prospective, Physiopathologie, Complication, Traitement, Homme.
Wicri :
- topic : Prospective, Homme.

English descriptors

KwdEn :
- Complication, Decision making, Extension, Human, Invasion, Mandible, Oral cavity, Pathophysiology, Prospective, Squamous cell carcinoma, Surgical approach, Surgical resection, Technique, Treatment.

Abstract

Background.An understanding of the patterns, spread, and routes of tumor invasion of the mandible is essential in deciding the appropriate level and extent of mandibular resection in oral squamous cell carcinoma. Methods. A prospective study of histologic patterns of tumor invasion and routes of tumor entry into the mandible was performed in a consecutive series of 100 previously untreated patients. Results. The pattern of tumor invasion of the mandible depended on the depth of invasion both in the hard (p =.001) and soft tissues (p =.001). There was evidence that the pattern of invasion was related to histologic prognostic indicators of the disease, such as extracapsular spread from invaded lymph nodes (p =.03). The route of tumor entry was at the point of abutment to the mandible (direct) in all 13 cases, invading the dentate part of the mandible. Fifty-five percent (23 of 42) of tumors invading the edentulous ridge entered through the occlusal (superior) surface. Direct entry to the mandible in the edentulous ridge was more likely for tumors arising in the tongue, floor of the mouth and the buccal mucosa compared with alveolar or retromolar sites (p =.003). Conclusions. Larger or more deeply invading tumors in the soft tissue are more likely to invade the mandible and show the more aggressive (invasive) form of tumor spread, reducing the options of a more conservative (rim) resection. Tumors tend to enter the mandible at the point of abutment, which in both the dentate and edentulous jaw is often at the junction of the reflected and attached mucosa. A point of tumor entry below the occlusal ridge or gingival crest should be assumed when planning rim or marginal resections of the mandible.

Affiliations:

Royaume-Uni

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Le document en format XML

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<term>Mandible</term>
<term>Oral cavity</term>
<term>Pathophysiology</term>
<term>Prospective</term>
<term>Squamous cell carcinoma</term>
<term>Surgical approach</term>
<term>Surgical resection</term>
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<term>Résection chirurgicale</term>
<term>Prise décision</term>
<term>Technique</term>
<term>Extension</term>
<term>Prospective</term>
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<front><div type="abstract" xml:lang="en">Background.An understanding of the patterns, spread, and routes of tumor invasion of the mandible is essential in deciding the appropriate level and extent of mandibular resection in oral squamous cell carcinoma. Methods. A prospective study of histologic patterns of tumor invasion and routes of tumor entry into the mandible was performed in a consecutive series of 100 previously untreated patients. Results. The pattern of tumor invasion of the mandible depended on the depth of invasion both in the hard (p =.001) and soft tissues (p =.001). There was evidence that the pattern of invasion was related to histologic prognostic indicators of the disease, such as extracapsular spread from invaded lymph nodes (p =.03). The route of tumor entry was at the point of abutment to the mandible (direct) in all 13 cases, invading the dentate part of the mandible. Fifty-five percent (23 of 42) of tumors invading the edentulous ridge entered through the occlusal (superior) surface. Direct entry to the mandible in the edentulous ridge was more likely for tumors arising in the tongue, floor of the mouth and the buccal mucosa compared with alveolar or retromolar sites (p =.003). Conclusions. Larger or more deeply invading tumors in the soft tissue are more likely to invade the mandible and show the more aggressive (invasive) form of tumor spread, reducing the options of a more conservative (rim) resection. Tumors tend to enter the mandible at the point of abutment, which in both the dentate and edentulous jaw is often at the junction of the reflected and attached mucosa. A point of tumor entry below the occlusal ridge or gingival crest should be assumed when planning rim or marginal resections of the mandible.</div>
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Patterns of invasion and routes of tumor entry into the mandible by oral squamous cell carcinoma

Patterns of invasion and routes of tumor entry into the mandible by oral squamous cell carcinoma

Source :

Descripteurs français

English descriptors

Abstract

Links toward previous steps (curation, corpus...)

Le document en format XML

Pour manipuler ce document sous Unix (Dilib)

Pour mettre un lien sur cette page dans le réseau Wicri