1/98. Mixed-type liposarcoma of the oral cavity: a case with unusual features and a long survival.A case of mixed-type liposarcoma, which showed unusual dedifferentiation in the recurrence, is reported. The rapidly growing mass in the palate of a 60-year-old Japanese woman first revealed a combination of myxoid liposarcoma with features resembling storiform malignant fibrous histiocytoma. The recurrent neoplasm, showing an abrupt transition between myxoid and non-lipogenic parts, partially reverted to sclerosing well-differentiated liposarcoma. The patient died 10.1 years after the first operation.- - - - - - - - - - ranking = 1keywords = oral cavity, cavity (Clic here for more details about this article) |
2/98. A case of metastasizing pleomorphic adenoma.The pleomorphic adenoma is the most common benign salivary neoplasm. A case is presented in which a palatal pleomorphic adenoma seeded a metastasis in the medullary cavity of the anterior maxilla, apparently by hematogenous spread after surgical manipulation.- - - - - - - - - - ranking = 0.0054169049073764keywords = cavity (Clic here for more details about this article) |
3/98. Antenatal sonographic diagnosis of epignathus at 15 weeks of pregnancy.Epignathus is a rare, benign, congenital teratoma of the hard palate. Most of these teratomas are unidirectional and protrude through the mouth. Hence, the prognosis depends on the size of the tumor and the degree of face distortion and airway obstruction that it causes. However, some epignathi protrude bidirectionally, involving and destroying the brain tissue, resulting in a poor prognosis. This report presents a case of ultrasonographic detection of a bidirectional epignathus at 15 weeks of pregnancy.- - - - - - - - - - ranking = 0.0013491632731666keywords = mouth (Clic here for more details about this article) |
4/98. Palatal lymphoepitheliomas and a review of head and neck lymphoepitheliomas.AIM: Lymphoepithelioma is principally a tumour of the nasopharynx with only sporadic cases arising elsewhere in the head and neck. We describe the clinical and imaging features of a group of rare lymphoepitheliomas related to the palate. patients AND methods: Four patients with lymphoepithelioma of the palate are described. In each case we retrospectively reviewed the clinical records, laboratory results, and imaging which consisted of computed tomography (CT) and ultrasound in all four cases and magnetic resonance imaging (MRI) in two patients. RESULTS: All four patients were ethnic Chinese (non-smokers, non-drinkers). All cases were Epstein-Barr virus (EBV) related. Tumour was related to the palate in two cases and extended into the nasal cavity in one patient. The fourth patient had a tumour in the floor of the nasal cavity with invasion of the palate on biopsy but not imaging. Cervical lymphadenopathy was seen in two cases, and the nasopharynx was normal in all the four patients. CONCLUSION: Lymphoepitheliomas occur in the region of the palate, where they are also EBV related in southern Chinese. Compared with the keratinizing squamous cell carcinomas, patients with lymphoepitheliomas have a better prognosis and these tumours are not tobacco or alcohol related. They should not be misdiagnosed as metastatic nasopharyngeal carcinoma (NPC), particularly since the nasopharynx is invariably normal on imaging and adequate nasopharyngeal biopsy is negative for malignancy.- - - - - - - - - - ranking = 0.010833809814753keywords = cavity (Clic here for more details about this article) |
5/98. Blue nevus of the hard palate.The occurrence of a blue nevus of the hard palate in a 72-year-old man is reported. Of the 25 previously documented cases of blue nevus of the oral cavity, 19 were on the hard palate, three on the upper lip, and one each on the lower lip, buccal mucosa, and soft palate. Fourteen were in women and 11 were in men. All but five patients were younger than 50 years of age. The size of the asymptomatic, flat to somewhat elevated, blue-black lesion varied up to 5 mm except for one that was 10 mm in the greatest dimension. Most nevi were of unknown duration and were found incidentally during dental examination. The histogenesis of extracutaneous blue nevus is undetermined but derivation from melanogenic potential of Schwann or endoneurial cells or from stimulation of retained melanoblasts in the stroma developing into melanocytes and formation of blue nevus is possible.- - - - - - - - - - ranking = 0.25keywords = oral cavity, cavity (Clic here for more details about this article) |
6/98. Primary malignant melanoma of the hard palate.A case of malignant melanoma of the oral cavity is presented. The very high frequency of squamous cell carcinoma of the palate in Visakhapatnam, india, is compared to the rarity of malignant melanoma, even though pigmentation of the oral cavity is quite common in this geographical region.- - - - - - - - - - ranking = 0.5keywords = oral cavity, cavity (Clic here for more details about this article) |
7/98. liposarcoma involving the periodontal tissues. A case report.Liposarcomas constitute 15 to 20% of all soft tissue tumors. They are extremely rare in the head and neck and in the oral cavity. A 30-year-old patient was seen for a soft, painless mass in the right palate. Through panoramic radiography it was possible to observe a radiolucent area with sharp margins in the right upper quadrant. The lesion, after an incisional biopsy, was diagnosed as a "myxoid liposarcoma." The patient underwent a wide excision of the lesion with bone laminectomy and he is well at a 4-year follow-up. The differential diagnosis included salivary gland tumors and palatal abscess.- - - - - - - - - - ranking = 0.25keywords = oral cavity, cavity (Clic here for more details about this article) |
8/98. Desmoplastic malignant melanoma of the palatal alveolar mucosa: sustained disease-free survival after surgery and postoperative radiotherapy.Aggressive surgical and radiotherapeutic management of a patient with desmoplastic malignant melanoma arising from the mucosa of the oral cavity has resulted in disease-free survival of more than 2(1/2) years after diagnosis. This case represents only the tenth reported instance of desmoplastic malignant melanoma arising from the oral cavity and only the third for which survival has exceeded 2 years. Details of the clinical, histopathologic, and therapeutic features of the case are provided to augment the paucity of literature available to clinicians managing this rare disease.- - - - - - - - - - ranking = 0.5keywords = oral cavity, cavity (Clic here for more details about this article) |
9/98. Three cases of palatal polyps in infants.Fibrous lesions are common in the oral cavity, however, in infants they are rarely reported. We present three cases of palatal polyps in infants aged 2 days, 3 months and 7 months. In two cases, the treatment was surgical removal and in one case the polyp decreased in size and surgical removal was not required. In two infants, the diagnosis was confirmed histologically as fibroepithelial hyperplasia.- - - - - - - - - - ranking = 0.25keywords = oral cavity, cavity (Clic here for more details about this article) |
10/98. 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 = 1.25keywords = oral cavity, cavity (Clic here for more details about this article) |
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