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Results for “Maxillary Neoplasms”

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At least 613 records · Page 34Linked to original sources
PubMed1978

Morbid changes of the mandible in familial polyposis of the colon.

The study was made to ascertain whether the radiographs of the mandible of patients with familial polyposis of the colon show osteomas. Orthopantomography of the mandible was taken in 10 cases of familial polyposis of the colon and 6 cases of the unaffected family members. And radiographic and histological studies were performed in another autopsied case. As a result, radiographic studies revealed sclerotic masses of the mandible in 10 of the 11 cases. In some cases, the changes were also found in the maxilla. The number of sclerotic masses ranged from 2 to 11, and they were associated with odontomas in 2 cases and impacted teeth in one case. Two of the 6 unaffected family members were found to have one or two sclerotic masses. At autopsy of a case died of cancer of the sigmoid colon, a radiographic study of the excised mandible revealed 11 sclerotic masses measuring 5 mm in diameter each, as well as one impacted tooth. A bucco-lingual cross action through the mandible in the canine area revealed central osteomas. Histological examination showed the osteomas were composed primarily of mature, lamellar bony tissue.

Adolescent↗
PubMed2000

Burkitt's lymphoma presenting with jaw lesions.

We report an unusual case of Burkitt's lymphoma (BL) presenting with jaw lesions in a 14-year-old Chinese boy. The patient presented initially with mobile teeth in all 4 jaw quadrants, with corresponding radiographic detection of alveolar bone crest destruction and periapical bone resorption in the absence of clinically detectable jaw tumors. Moreover, radiographs taken only 17 days later showed clearly distinguishable signs of more extensive alveolar bone destruction compared with the initial radiographs.

Adolescent↗
PubMed2004

Osteogenic sarcoma of the mandible and maxilla: a Canadian review (1980-2000).

OBJECTIVE: To determine factors that influence survival in patients with osteogenic sarcoma of the jaws. STUDY DESIGN: Multicentre retrospective clinical pathologic study of 35 patients with osteogenic sarcoma of the jaws by the Canadian Society of Otolaryngology-Head and Neck Surgery Oncology Study Group. METHODS: Clinical charts and pathology results were reviewed on 35 patients treated between 1980 and 2000 for osteogenic sarcoma of the maxilla or mandible. Records were acquired from several major Canadian cancer registries. The following variables were examined for the effect on survival: age, gender, tumour site, grade and subtype, margins, and method of treatment. RESULTS: The average age of patients was 40 years (range 14-76 years). The sex distribution was similar, with 18 males and 17 females. The primary site was the mandible in 20 patients and the maxilla in 15 patients. The overall survival was 79 +/- 7% at 2 years and 57 +/- 9% at 5 years. Local recurrence (41%) was more common than distant metastases (17%). Positive margins were the factor most strongly associated with poor prognosis on multivariate analysis (hazard ratio = 3.5, p < .04). Disease-free survival dropped to zero by 3 years for those with positive margins (n = 7). For those who were resected with clear margins (n = 25), 5-year disease-free survival remained greater than 50% and the overall survival rate was almost 80%. Tumour site, grade, and subtype did not correlate with prognosis. There was a trend toward better prognosis in those who received chemotherapy in addition to surgery. CONCLUSION: Osteogenic sarcoma of the jaws is an aggressive disease with a high mortality rate despite a relatively low risk of distant metastases. Negative margins are paramount for optimizing survival rate. Chemotherapy, although contentious, should be considered given the data from long bone studies and the trend toward better survival in several studies, including ours.

Adolescent↗
PubMed1999

Clinicopathological studies of odontoma in 47 patients.

A 14-year retrospective study was performed on 47 odontomas from the files of the 1st Department of Oral and Maxillofacial Surgery at Nihon University School of Dentistry. Fifty-seven percent of the patients were male and 42.6% were female. The age distribution was 8 to 48 years with a mean age of 22 +/- 9.0 years. There were no particular symptoms associated with the odontomas, and 63.8% of our patients had no symptoms. However, 12 patients complained of swelling and 9 of pain. The tumor was found in the maxilla in 42.6% and in the mandible in 57.4%. According to the WHO histological type classification, 53.2% of the tumors were classified as compound odontoma and 46.8% as complex odontoma. The size of the tumor ranged from 5 mm to 42 mm in diameter. The average complex odontoma was much bigger than the average compound odontoma. Ghost cells were found 11 cases in our series. In addition, odontogenic epithelium was found in 16 cases. Twenty seven patients had impacted teeth in association with odontoma and 24 of the 27 teeth were removed at the time of surgical enucleation of the tumor, while 3 cases were treated by orthodontically assisted eruption. There was no recurrence in any of the studied cases.

Adolescent↗
PubMed1995

Metrical differential diagnosis based on location (Part 2). Differential diagnosis among various benign tumors.

An attempt was made to quantify the location of various oral lesions using panoramic radiographs of benign tumors (20 ameloblastomas, 5 myxomas, 26 odontomas, 10 cementomas and 4 osteomas). The metrical data (integers) were obtained from a conversion table and the abscissa values (to the first decimal place) were obtained from the centroid of each of the tumors. Differential diagnosis among these lesions revealed that in the mandible, it is possible to differentiate between ameloblastomas and odontomas or osteomas. Thus, the present findings demonstrate that data on lesion location can be changed into metrical data for differential diagnosis of benign tumors.

Ameloblastoma↗
PubMed1997

A clinicopathologic study of odontomas: Malaysian findings.

This report reviews the clinicopathologic characteristics of 104 cases of odontomas diagnosed in the Division of Stomatology, Institute for Medical Research, Kuala Lumpur, over a 29-year period (1967-1995). The results showed no real predilection in terms of sex (M:F ratio, 1:1), race (45.2% Malays, 40.4% Chinese, 10.6% Indians and 3.8% other races) or site (maxilla:mandible ratio, 1: 1.04) distribution. The mean age at presentation was 24.8 years and the age range was 3-74 years. There were 102 intraosseous and 2 extraosseous odontomas. Swelling was the most common presenting complaint. The majority of cases (81.9%) were clinically diagnosed as odontomas. The treatment of choice was surgical enucleation. Compound (43.3%) and complex (35.5%) odontomas were the two most common histological types encountered. The present findings correlate favorably with reported studies from other geographic areas.

Adolescent↗
PubMedDate not supplied

Primary malignant bone tumour in a tropical African University teaching hospital.

Bone tumours are relatively rare tumours as compared with all other tumours. The relative frequency has not been well documented in this environment. The aim of the study was to define the frequency of primary malignant bone tumours in an African University teaching hospital in Ibadan. The medical records of 114 patients with malignant bone tumours recorded in the Cancer Registry of the University College Hospital, Ibadan, Nigeria between January 1977 and December 2000 were reviewed retrospectively. Primary malignant bone tumours represented 0.53% of all the 21390 cancers seen in the teaching hospital in the period studied, with a male female ratio of 1.4:1. About 45% oftumours occurred among patients < 20 years of age. Osteogenic sarcoma was the most common primary malignant bone tumour while the mandible was the most commonly affected bone. In contrast to previous studies, Burkitt's lymphoma affected the mandible more commonly than the maxilla. The relative frequency of primary malignant bone tumours is low in our environment as observed in other developing countries.

Adolescent↗