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Ultrasonic tomography was applied to diagnose salivary gland diseases in 201 patients. Malignant disorders were found in 53 cases, benign in 127, and inflammation in 21. The investigation yielded some echographic diagnostic criteria for tumors and non-tumorous salivary gland diseases.
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The algorithm for imaging of the salivary glands depends on the clinical scenario with which the patient presents to the clinician. Ultrasound has been increasingly used in recent years and thanks to high performance, easy to use apparatus, it can now be used for exploration of the salivary glands. This non invasive, painless and relatively inexpensive examination provides rapid visualisation of the salivary glands and is a useful adjunct to computed tomography and magnetic risonance imaging examination, particularly in tumour pathology. In recent years, publications have highlighted the potential uselfulness of salivary gland ultrasonography as a simple and non-invasive adjunctive test for the detection of gland involvement in Sjögren's syndrome (SS). SS is a chronic inflammatory disease of the salivary glands characterised by focal lymphocytic infiltrates that cause progressive destruction of the acinar structures. The findings of a previous study lead us to believe, in agreement with other examiners, that semiquantitative assessment of ultrasonographic images of the salivary glands is a sensitive and very useful means of evaluating salivary involvement in SS. Color Doppler sonography is a recently introduced method which makes it possible to evaluate intra- and perilesional vascularization and to perform a hemodynamic study of the area being explored. The color Doppler sonography can provide a useful adjunct to conventional ultrasound, increasing diagnostic accuracy in submandibular- parotid masses and to analyze physiologic changes that occur during salivary stimulation in normal subjects and the flow alterations that occur in diseased glands of SS patients. This article reviews the normal ultrasound anatomy of the salivary glands along with lithiasic, inflammatory, tumoral, and autoimmune disease such as SS.
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Salivary gland diseases are uncommon in both the dog and the cat. Conditions involving the salivary glands include rupture, inflammation, dilation, necrosis, fistula, a foreign body, autoimmune disease, calculi, and neoplasia. The onset of many of these conditions is often insidious, with vague findings on physical examination. Proper diagnosis and treatment is often dependent on aspiration, radiology, and exploratory surgery. Surgical problems associated with salivary gland surgery relate primarily to accurate dissection, complete extirpation of the involved gland(s) and duct system(s), and drainage when indicated. Complications are more often a result of improper diagnosis and iatrogenic interference than the primary disease. The focus of this discussion will be on accurate diagnosis and treatment so that associated problems and complications can be avoided.
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A wide range of non neoplastic disorders can affect the salivary glands, although the more common are: mumps, acute suppurative sialadenitis, Sjögren's syndrome and drug-induced xerostomia. Salivary dysfunction is not a normal consequence of old age, and can be due to systemic diseases, medications or head and neck radiotherapy. Diagnosis of salivary disorders begins with a careful medical history, followed by a cautious examination. While complaints of xerostomia may be indicative of a salivary gland disorder, salivary diseases can present without symptoms. Therefore, routine examination of salivary function must be part of any head, neck, and oral examination. Health-care professionals can play a vital role in identifying patients at risk for developing salivary dysfunction, and should provide appropriate preventive and interventive techniques that will help to preserving a person's health, function, and quality of life. The present work provides an overview of most of the non neoplastic disorders of the salivary glands, in which the general presentation, pathology, and treatments are discussed.
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HIV-associated salivary gland disease (HIV-SGD) includes lymphoepithelial lesions and cysts involving the salivary gland tissue and/or intraglandular lymph nodes, and Sjögren-like conditions. Three cases of salivary gland disease occurring in HIV-infected patients are reported. Histopathological examination showed squamous epithelium-lined cysts. In the walls of the cysts lymphoid tissue, epitheloid granulomas and giant cells were found. The clinical and histopathological criteria as well as magnetic resonance imaging and therapy are discussed.
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Thirty-two patients with salivary gland tumors or sialadenitis were studied with Tc-99m pertechnetate and Ga-67 imaging and, in some instances, sialography. The diagnostic algorithm presented allows the correct categorization of the salivary gland pathology in the vast majority of patients. The patients were studied serially with Tc-99m pertechnetate, Ga-67 and in certain situations sialography (or CT-sialography). Use of the algorithm can distinguish benign salivary tumors from malignant tumors and malignant tumors from inflammatory disease. The limitations and pitfalls of interpretation are discussed.
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Explore the source record for details and available documents.
Explore the source record for details and available documents.
Explore the source record for details and available documents.