Neuroimaging clinics of North America
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Cystic lesions appearing in the maxilla and mandible have been shown with their typical radiographic features. In addition, this article has presented radiographic techniques used to diagnose these lesions. ⋯ Key features to differentiate among these cysts have been discussed. Finally, the article discussed the differentiation of jaw cysts from benign tumors that appear in the jaws.
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Benign odontogenic tumors are characterized by imaging findings of expansile growth and well-defined margins with smooth borders, and their appearance is very similar to that of odontogenic and nonodontogenic cysts. From the viewpoint of diagnostic imaging of odontogenic tumors, teeth are designed differently according to their origin from the apex or crown. Therefore, for differential diagnosis, it is necessary to select diagnostic methods that make it possible to evaluate these findings in detail. ⋯ MR imaging is effective in differentiating between tumors and cysts, evaluating the infiltration of malignant tumors in the jawbone and surrounding soft tissue, and detecting bone marrow changes of the jaw. Differentiation between tumors and cysts must be achieved by contrast-enhanced studies. Combining plain radiography with advanced imaging techniques, including CT and MR imaging, can improve the accuracy of diagnosing odontogenic tumors.
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Neuroimaging Clin. N. Am. · Aug 2003
ReviewThe temporomandibular joint: clinical and surgical aspects.
Advances in imaging techniques have greatly enhanced the ability to visualize the internal anatomy of the temporomandibular joint and have increased understanding of the etiology of many temporomandibular disorders. When used together with careful history and physical examination, this knowledge can contribute to better treatment outcomes.
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Neuroimaging Clin. N. Am. · Aug 2003
ReviewLesions of the maxilla: crossroads of the head and neck.
The maxilla may be involved by a wide range of pathologic conditions. Lesions originating in the maxilla may involve the adjacent orbit, oral cavity, or retroantral spaces. Recognition of this relationship plays an important role in diagnosis, prognosis, and presurgical planning.
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Vascular interventions are important and helpful for treatment of various pathologies of the head and neck. Interventional neuroradiology of the head and neck includes image-guided biopsies, vessel occlusion, and local chemotherapy. Knowledge of anatomy, functional relationships between intra- and extracranial vessels, and pathology are the basis for therapeutic success. ⋯ Avoiding complications, handling unavoidable problems, and dealing with complications is a skill founded on knowledge and experience. Continuing education is a firm basis to push the limits of interventions and expand benefits without increasing risk for the patient. Nevertheless, state-of-the-art external carotid intervention should, in skilled hands, have a permanent morbidity far below 1% and no mortality.