1/236. Extraparotid Warthin's tumor.Warthin's tumor (papillary cystadenoma lymphomatosum) is a well-known benign tumor of the parotid gland. Extraparotid tumors occasionally arise in the cervical region, where they may well be seen by the dermatologist. The following is a case report of an extraparotid Warthin's tumor encountered in a dermatology practice, with a review of the important clinical and histopathologic features of this tumor.- - - - - - - - - - ranking = 1keywords = gland, adenoma (Clic here for more details about this article) |
2/236. Unusual presentation of a salivary pleomorphic adenoma: a case report and review of the literature.Although pleomorphic adenomas are the most common neoplasms of salivary gland origin, our knowledge of the etiology, growth, and recurrence patterns, and significance of the varying histologic features of these tumors, remains limited. We present the case of a 66-year-old man with an unusual presentation of a pleomorphic adenoma, and review the important clinical and pathologic features of this entity.- - - - - - - - - - ranking = 2.4662722942645keywords = gland, adenoma (Clic here for more details about this article) |
3/236. Intensity-modulated radiotherapy: first results with this new technology on neoplasms of the head and neck.Intensity-modulated beam radiotherapy (IMRT) delivers a highly conformal, three-dimensional (3-D) distribution of radiation doses that is not possible with conventional methods. When administered to patients with head and neck tumors, IMRT allows for the treatment of multiple targets with different doses, while simultaneously minimizing radiation to uninvolved critical structures such as the parotid glands, optic chiasm, and mandible. With 3-D computerized dose optimization, IMRT is a vast improvement over the customary trial-and-error method of treatment planning. We retrospectively reviewed the charts of the first 28 head and neck patients at our institution who were treated with IMRT. All had head and neck neoplasms, including squamous cell carcinoma, adenoid cystic carcinoma, paraganglioma, and angiofibroma. Total radiation doses ranged from 1,400 to 7,100 cGy, and daily doses ranged from 150 to 400 cGy/day. A quality assurance system ensured that computer-generated dosimetry matched film dosimetry in all cases. For midline tumors, this system allowed us to decrease the dose to the parotid glands to less than 3,000 cGy. The incidence of acute toxicity was drastically lower than that seen with conventional radiotherapy delivery to similar sites. This is the first report of the application of IMRT strictly to head and neck neoplasms. We discuss the indications, technique, and initial results of this promising new technology. We also introduce the concept of the Simultaneous Modulated Accelerated radiation Therapy boost technique, which has several advantages over other altered fractionation schemes.- - - - - - - - - - ranking = 1.4134910822942keywords = gland (Clic here for more details about this article) |
4/236. Visualisation of a paraganglioma by technetium-99m-sestamibi scintigraphy.A 68-yr-old woman presented to our observation with multinodular goiter and a contiguous right laterocervical mass. In spite of ultrasound, technetium and iodine scan, CT and fine-needle biopsy, the precise origin of the mass remained uncertain. On additional multi-phase sestamibi scan, the neck region showed an early high uptake rapidly decreasing over time in the laterocervical mass, and a persistent inhomogeneous distribution in the thyroid gland. This behavior suggested that the laterocervical mass could derive from an anatomical structure other than the thyroid. Surgical exploration established the extrathyroid nature of the laterocervical mass and the histological examination confirmed that it was a typical paraganglioma. This finding is in keeping with a recent report of positive sestamibi uptake in a cervical paraganglioma, although our case showed a more rapid kinetic. This tumor should be therefore taken into consideration in the differential interpretation of focal sestamibi uptake.- - - - - - - - - - ranking = 0.7067455411471keywords = gland (Clic here for more details about this article) |
5/236. Histologic transformation of polymorphous low-grade adenocarcinoma of salivary gland.Polymorphous low-grade adenocarcinoma of salivary gland origin (PLGA) was initially described in 1984 and has since become an established clinicopathologic entity. Owing to the indolent nature of PLGA and its relatively recent description, the full clinicopathologic spectrum of this entity has not been elucidated fully. Transformation to a histologically different-appearing lesion or progression to a higher histologic grade has not been reported. We describe 2 PLGAs arising in the palate and associated with multiple locoregional recurrences that were treated with excision and radiation therapy. This was followed by histologic transformation to a higher grade neoplasm after 17 and 26 years, respectively. The histologic appearance after transformation was characterized by a predominantly solid and cystic growth pattern, nuclear atypia with prominent nucleoli, and foci of necrosis. High-grade transformation of PLGA may occur after a protracted clinical course with multiple recurrences of typical PLGA. The possible role of radiation therapy as an initiator of this transformation merits further study. Tumors with these histologic features should not be included under the rubric of typical PLGA. Segregation of these neoplasms will allow further study of their biologic potential, particularly with regard to possible increased rates of local recurrence and metastasis.- - - - - - - - - - ranking = 3.5337277057355keywords = gland (Clic here for more details about this article) |
6/236. A review of heterotopia and associated salivary gland neoplasms of the head and neck.Salivary tissue neoplasms may involve normal, accessory and heterotopic salivary gland tissue. A case of Warthin's tumour originating from heterotopic salivary gland tissue of the upper neck is reported. The radioactive uptake of 131I, evidenced in the neck mass in its pre-diagnostic assessment, suggested a diagnosis of cervical node involvement from a primary malignant thyroid neoplasm. A critical review of the literature on heterotopic salivary gland tissue neoplasms of the head and neck is also presented.- - - - - - - - - - ranking = 4.9472187880297keywords = gland (Clic here for more details about this article) |
7/236. Primary cutaneous adenoid cystic carcinoma metastatic to cervical lymph nodes.BACKGROUND: Adenoid cystic carcinoma (ACC) occurs not only as a neoplasm of salivary glands but also in the skin. Metastasis is rare, and metastasis to lymph nodes has not been reported in the English literature. Case Report A patient with a history of excisions of "cylindroma" of the scalp over the past 20 years was initially seen with 2 recurrent scalp nodules and a firm left neck mass. Both scalp lesions and multiple neck nodes were found to be ACC at resection. The patient underwent postoperative radiation therapy and is clinically free of disease at 4 years. CONCLUSIONS: We believe this represents the first reported case of nodal metastases from primary cutaneous ACC in the English literature.- - - - - - - - - - ranking = 0.7067455411471keywords = gland (Clic here for more details about this article) |
8/236. A new pattern of multiple endocrine adenomatosis: chemodectoma, bronchial carcinoid, GH-producing pituitary adenoma, and hyperplasia of the parathyroid glands, and antral and duodenal gastrin cells.A female patient was found to have a chemodectoma, a GH-producing pituitary tumour and a bronchial carcinoid combined with hyperplasia of the parathyroids and of antral and duodenal gastrin cells. This combination of endocrine tumours and hyperplasias does not fit with the two multiple endocrine adenomatosis syndromes recognized at present. The case stresses the importance of scanning the patient for other endocrine tumours, once one has been diagnosed.- - - - - - - - - - ranking = 5.4662722942645keywords = gland, adenoma (Clic here for more details about this article) |
9/236. Extracranial neurilemmoma: a case report and review of the literature.A 14-year-old male presented with a several month history of an asymptomatic right cervical swelling. An ultrasound scan showed a solid lesion superficial and superior to the thyroid gland. Surgical excision of the lesion was carried out and histological examination revealed a neurilemmoma. Neurilemmomas are relatively rare tumours and even rarer in children. The incidence of such tumours and the management of our patient are discussed.- - - - - - - - - - ranking = 0.7067455411471keywords = gland (Clic here for more details about this article) |
10/236. Head and neck teratomas in children.A retrospective review of seven patients with teratomas of the head and neck treated at out center over the past 5 years, which represented 2% of all teratomas (sacrococcygeal, ovarian, and retroperitoneal) seen over the past 20 years, was performed. After investigation to exclude associated anomalies, all but one of the children underwent surgery for removal of the tumour. All excised tumours were subjected to histopathological examination to confirm their teratomatous nature. The patients were followed up at regular intervals for up to 4 years. The patients' ages ranged from newborn to 2.5 years. There were three cervical, two oral, and two skull teratomas. The youngest patient had a cervical teratoma with respiratory compromise, requiring tracheal intubation. All but one patient (skull teratoma) had excision of the tumours with a satisfactory outcome. Histopathological examination of the excised tumours showed mature tissue from the three germinal layers in all specimens. Specific components included glandular epithelium, keratinising epithelium, and muscle fibres. Follow-up did not show any recurrence in the operated children. The three with cervical teratomas had normal levels of thyroid hormone postoperatively. Head and neck teratomas in children are mostly benign lesions amenable to curative excision. In cervical teratomas airway management takes priority.- - - - - - - - - - ranking = 0.7067455411471keywords = gland (Clic here for more details about this article) |
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