1/32. brachytherapy using gold-198 foils in treatment of mouth tumors: case report.The authors presents a clinical case treated with brachytherapy performed with special mold of gold-198 disc, with the purpose of evaluating the distribution of radiation dose, the viability of manufacturing the radioactivity prosthesis and its operational cost. In despite of being only one case, we can conclude that the prosthesis with gold-198 foils can be manufactured in acrylic with thickness thinner than those ones with cylinder of cesium-137, resulting lower operational costs, besides permitting better distribution of radiation dose on the lesion.- - - - - - - - - - ranking = 1keywords = mouth (Clic here for more details about this article) |
2/32. Polymorphous low-grade adenocarcinoma of the oral cavity.Polymorphous low-grade adenocarcinoma (PLGA) is a neoplasm arising most commonly within the minor salivary glands of the oral cavity. Not recognized as a distinct entity until 1983, PLGA was often misdiagnosed as adenoid cystic carcinoma or pleomorphic adenoma. PLGA is thought to be the second most common salivary gland tumor after mucoepidermoid carcinoma. Affecting individuals later in life, PLGA often presents as a firm, painless nodule that exhibits a locally aggressive, infiltrative pattern. Because of PLGA's slow growth rate and low rate of metastasis, differentiation from other disease entities is crucial for treatment modalities. The study presented here reviews three cases of PLGA, their treatment and follow-up.- - - - - - - - - - ranking = 8.254558462791keywords = oral cavity, cavity (Clic here for more details about this article) |
3/32. A pivoting appliance for intracavitary brachytherapy in patients with reduced mouth opening.PURPOSE: The risks of radiotherapy to normal tissues are well known. In many cases, a tumor patient suffering a relapse cannot undergo radiotherapy a second time. One exception may be the local application of brachytherapy. Afterloading devices allow the position of radiating materials near the site for treatment exactly according to three-dimensional treatment planning. This report shows the technical procedure for the fabrication of an intracavitary afterloading radiation device. MATERIALS AND methods: A 48-year-old woman who had received neutron radiotherapy and tumor surgery for adenoid cystic carcinoma had to be treated for relapse. The mouth opening was limited to 15 mm. The mixing tip of a silicone impression system was used as an axis for a pivoting appliance. RESULTS: Two years after reradiation, the patient was free of relapse symptoms, although an increased limitation of mouth opening was recorded. CONCLUSION: Even if the mouth opening is severely limited after tumor surgery and/or radiation, intracavitary brachytherapy still can be performed in edentulous patients using a pivoting device.- - - - - - - - - - ranking = 1.75keywords = mouth (Clic here for more details about this article) |
4/32. Incidentally found and unexpected tumors discovered by MRI examination for temporomandibular joint arthrosis.We examined the frequency of incidentally found or unexpected tumors discovered at the time of magnetic resonance imaging (MRI) examinations in the temporomandibular joint (TMJ) region for patients with suspicion of TMJ arthrosis. Five MR images (T1-weighted transverse scout image and proton density and T2-weighted oblique sagittal images at the open and closed mouth) were acquired. In 2776 MRI examinations of TMJ arthrosis, two tumors were discovered. They consisted of an adenoid cystic carcinoma in the deep portion of the parotid gland, and a malignant tumor extending from the infratemporal fossa to the parapharyngeal space. The rate of incidentally founded or unexpected tumors in TMJ examinations was low (0.072%), but the two tumors found were malignant tumors, and therefore, scout image should be carefully examined, not only used for positing the slice.- - - - - - - - - - ranking = 0.25keywords = mouth (Clic here for more details about this article) |
5/32. Adenoid cystic carcinoma of the nasal septum.Adenoid cystic carcinoma is a malignant tumour frequently described arising from seromucinous salivary tissue in the major and minor salivary glands. Within the nasal cavity, it is uncommon and usually involves the lateral wall. A rare case of adenoid cystic carcinoma of the nasal septum is presented along with a review of the literature. The presentation and management of this uncommon condition is discussed.- - - - - - - - - - ranking = 0.16655784728446keywords = cavity (Clic here for more details about this article) |
6/32. Difficulties in diagnosing lesions in the floor of the mouth--report of two rare cases.This article highlights 2 contrasting lesions of the floor of the mouth, the first being a benign lipoma growth and the latter, an adenoid cystic carcinoma. Both of these lesions appear clinically similar, presenting as a swelling with normal overlying mucosa and otherwise asymptomatic at the time of clinical examination. As the swelling for Case 1 is small and fluctuant, no special investigation was ordered, whereas a computed tomographic scan was ordered for the larger expansile lesion in Case 2. The lesions were excised under local and general anaesthesia respectively and a histology henceforth. Recovery for both cases were uneventful and no recurrence or complication was noted to date when this article was written. The two extreme natures of the lesions manifested in the region serve as a cautionary note to clinicians.- - - - - - - - - - ranking = 1.25keywords = mouth (Clic here for more details about this article) |
7/32. Rearrangement of 9p13 as the primary chromosomal aberration in adenoid cystic carcinoma of the respiratory tract.Two adenoid cystic carcinomas, one of the nasal cavity, the other a bronchial tumor, were cytogenetically analyzed. The former had a t(6;9)(q21-22;p 13-21) as the sole karyotypic abnormality. The latter had two related abnormal clones, resulting in the mosaic karyotype 46,XY,t(9;17)(p13;p13)/46,Y,t(X;6)(p22;q23),t(9;17)(p13;p13). The karyotypic profiles of the two cases, the only respiratory tract adenoid cystic carcinomas that have been cytogenetically characterized, differ little from those of previously reported adenoid cystic carcinomas of the major salivary glands, underscoring the fundamental biologic similarity among these tumors even when they develop from different structures and in different anatomical sites and organs. Because in the second case the t(9;17) obviously must have preceded the t(X;6), we conclude that both tumors had rearrangement of 9p13 as the primary cytogenetic change. The data thus add to the evidence that 6q changes are frequent, albeit at least sometimes secondary, aberrations in malignant salivary gland tumors. A subset of adenoid cystic carcinomas instead have rearrangement of 9p as the primary, and presumably pathogenetically essential, abnormality.- - - - - - - - - - ranking = 0.16655784728446keywords = cavity (Clic here for more details about this article) |
8/32. The rectus abdominis free flap in head and neck reconstruction.The rectus abdominis musculocutaneous free flap, based on the deep inferior epigastric artery and vein, has been used widely in reconstruction of the breast and extremities. The number of reports on its applications in the head and neck is limited. The rectus abdominis free flap is one of the most versatile soft-tissue flaps. The deep inferior epigastric artery and vein are long, large-diameter vessels that are ideal for microvascular anastomoses. The area of skin that can be transferred is probably the largest of all flaps presently in use. The versatility of this donor site is due to the ability to transfer large areas of skin with varying thicknesses and varying amounts of underlying muscle. We have successfully used this flap in 15 consecutive patients to reconstruct defects of the neck, face, mouth, pharynx, skull base, and scalp. No major complications involving either the recipient or donor sites occurred. The literature on the use of the rectus abdominis flap in head and neck reconstruction is reviewed in detail. The advantages and disadvantages of this soft-tissue free flap are thoroughly discussed in an effort to better define its proper place among the reconstructive options available to the head and neck surgeon.- - - - - - - - - - ranking = 0.25keywords = mouth (Clic here for more details about this article) |
9/32. facial nerve palsy by nasal tumour--a case report.A case of an adenoid cystic carcinoma of the minor salivary glands of then nasal cavity is reported. The tumour had spread locally and by perineural spread to the internal auditory mentus, causing facial nerve palsy.- - - - - - - - - - ranking = 0.16655784728446keywords = cavity (Clic here for more details about this article) |
10/32. Nasopharyngeal tumor initially manifested as myofascial pain dysfunction syndrome.A patient with facial pain of 1 1/2 years' duration, associated with limitation of opening of the mouth, click, and osteodegenerative changes of the temporomandibular joint, was initially thought to be suffering from a myofascial pain dysfunction syndrome. At first, the patient reacted favorably to muscle exercises and an antidepressive drug, but reduced lacrimation and the development of deafness on the affected side led to re-evaluation and a diagnosis of nasopharyngeal tumor. biopsy confirmed the presence of an adenocarcinoma of the nasopharynx. The variability of symptoms and the diagnostic problems presented by this tumor are discussed.- - - - - - - - - - ranking = 0.25keywords = mouth (Clic here for more details about this article) |
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