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  • Osteomyelitis  (6)
  • Radiotherapy  (4)
  • 1
    ISSN: 1613-9674
    Keywords: Osteomyelitis ; Mandible ; Radiograph ; Inflammatory extension
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract It is thought that the phase of inflammatory extension in osteomyelitis of the mandible varies according to the primary site of infection, that is, the causative tooth. This study was conducted to analyze the relationship between the extension phase of inflammatory bone changes and the causative tooth in patients with radiographically diagnosised osteomyelitis of the mandible. Between 1983 and 1993, a total of 219 patients with osteomyelitis of the mandible were seen in our department. In the age distribution, 135 cases occurred in men and 98 cases in women. Osteomyelitis was most prevalent in patients in their sixties (39 cases) followed by patients in their forties and fifties (38 cases each). The causative tooth was identified in 97 cases of osteomyelitis in the mandible. In the 39 cases in which the primary infection was caused by the third mandibular molar, distal extension was most prevalent (30 cases). In the 58 cases in which a tooth other than the third mandibular molar was the cause (front tooth, premolar, deciduous tooth and other molars), equal extension in the mesio-distal direction was most prevalent (40 cases). In the upper-lower extension phase, lower extension beyond the mandibular canal was most prevalent in the first, second and third molar teeth. In the cases involving teeth other than the mandibular molars, the inflammatory bone changes were rather limited to the upper part of the mandibular canal.
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  • 2
    ISSN: 1613-9674
    Keywords: Tongue cancer ; Radiotherapy ; Young adult
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary Thirty-one patients age 30 years or younger treated for squamous cell carcinoma of the oral tongue at the Department of Radiology, Osaka University Hospital between 1967 and 1982 were reviewed. Treatment for the primary lesion was interstitial radiotherapy or combination of external radiotherapy and interstitial radiotherapy in the majority of cases. The 2-year survival rate was 68% which compares with those in patients of all ages treated for the same disease. Young age itself, therefore, may have no influence on prognosis.
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  • 3
    Electronic Resource
    Electronic Resource
    Springer
    Oral radiology 3 (1987), S. 11-18 
    ISSN: 1613-9674
    Keywords: Mouth floor carcinoma ; Radiotherapy ; Mandible preservation
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract From 1967 through 1984 a total of 151 patients with squamous cell carcinoma of the floor of the mouth were treated by radiation therapy at the Department of Radiology, Osaka University Hospital. For 136 determinate patients, 5-year local control rate of primary lesion was 72%. According to T stage, local control rate was 86% for T1 lesions, 71% for T2, 70% for T3, and 58% for T4. A majority of T1 or early T2 lesions were curable by brachytherapy alone or external irradiation combined with bleomycin or peplomycin. For advanced T2 or T3 lesions, external irradiation combined with bleomycin or peplomycin and followed by brachytherapy was applied. Surgery was reserved for relatively radioresistant tumor or for neck dissection and/or salvage of disease recurred at the primay site or in the neck. Overall five-and ten-year survival rates were 55% and 49%, respectively. According to stage, five-year survival rate was 95% for Stage I (20 patients), 55% for Stage II (48), 45% for Stage III (51), and 46% for Stage IV (32), included the results of salvage surgery.
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  • 4
    ISSN: 1613-9674
    Keywords: Tongue carcinoma ; Radiotherapy ; Histological malignancy ; Neck node metastasis
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary A new system for the histological grading of malignancy was ultilized in 91 cases of squamous cell carcinomas of the anterior 2/3 of the tongue which were treated initially by radiotherapy at Osaka University Hospital from 1967 to 1980. Three different morphological parameters were evaluated with respect to the tumor, cell population estimated in terms of a four-point scale. A correlation was found between the degree of histological malignancy and the incidence of neck node metastasis. Furthermore, a statistical significance was valid on the survival rates between the group according to the histological grading. At present, prophylactic neck dissection is encouraged, especially for the highly malignant cases.
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  • 5
    ISSN: 1613-9674
    Keywords: Osteomyelitis ; Child ; Tooth follicle
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
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  • 6
    ISSN: 1613-9674
    Keywords: Oral cancer ; Radiotherapy ; Statistical analysis
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary Sixty nine patients with carcinoma of the oral cavity, especially those treated by radiotherapy during the 5 year period from 1982 through 1987 were reviewed. Sixty three of 67 patients (94%) had received radiation therapy with curative, adjunctive or palliative intent. In the cases when external irradiation was applied, the antitumor agents were combined in most cases. As the curative therapy for tongue cancer, 23 of 33 patients were treated with radiotherapy alone, i.e., interstitial implants alone or in combination with external irradiation. The 5-year cumulative survival rate for all cases was 55.4%; for stage I and II was 84%, and for stage III and IV it was 22.7%.
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  • 7
    ISSN: 1613-9674
    Keywords: Osteomyelitis ; Radiographs ; Histology
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract Fifty-six patients with maxillary and mandibular osteomyelitis were investigated radiologically and histopathologically. The radiographic changes were classified into 5 patterns: osteolytic, mixed, sclerosing, sequestrum and irregular trabeculation patterns. Osteomyelitis was classified into 3 histological types, based on the amount of bony trabeculae present. Type I bone consisted of severely sclerotic bone, type II bone had coarse trabeculae with fibrotic marrow spaces. In contrast, type III bone had thin trabeculae with occasional osteoblastemata. The correlations between the radiographic and histological patterns and differences between acute and chronic cases were examined. Acute cases were often of the osteolytic or sequestrum patterns, and had type I or II bone. Type II bone was the most common, and was found in all radiographic types. Type III bone was frequently seen in cases with an osteolytic or mixed radiographic pattern. It seemed that severely sclerotic bone with narrowed or occluded Haversian canals (type I bone) tended to develop following acute infection. A possible explanation of the relationship of 5 radiographic types is also discussed.
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  • 8
    ISSN: 1613-9674
    Keywords: Osteomyelitis ; Temporomandibular joint ; CT diagnosis ; Sialography
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract Mandibular osteomyelitis often causes infection of the masticator space. Recent studies have shown the value of computed tomography (CT) in the diagnosis of infection. CT occasionally also suggests its etiology. The present three cases of mandibular osteomyelitis showed condylar involvement which caused a tumor-like swelling in the parotid-masseteric region. In one case, the true cause of infection was unclear, even by computed tomography. In two of the three cases, sialography was performed, and it showed a unique extraglandular mass pattern. It was suggested from the results that sialography and/or CT-sialography should be performed to rule out the etiology of the infection from a parotid lesion, if the true cause of infection is unclear.
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  • 9
    ISSN: 1613-9674
    Keywords: Eosinophilic granuloma ; Osteomyelitis ; Malignant neoplasm ; Scintigraphy
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract An eosinophilic granuloma was discovered in the region of the ramus of the mandible. This case occured in a very rare location limited only to the ramus, and showed similar features resembling osteomyelitis or malignant neoplasm at different stages of the disease. The radiographic findings indicated a diagnosis of malignant neoplasm and the scintigraphic manifestations showed that of osteomyelitis. The histopathological examinations showed different manifestations in accordance with the respective stages of the disease. This case was finally diagnosed as eosinophilic granuloma showing rapid regression.
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  • 10
    ISSN: 1613-9674
    Keywords: Periosteal new bone formation ; Mandible ; Osteomyelitis
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract A total of 1008 cases with osteomyelitis of the mandible underwent radiological examinations at the department of Oral Radiology, Osaka Dental University Hospital from 1979 to 1988. Osteomyelitis with periosteal new bone formation was observed in 114 out of the 1008 cases (11.3%). The radiographic patterns of the periosteal new bone formation were grouped into 3 types: solid, laminated and one-layer. Sixty-seven of the 114 cases (58.8%) were of the solid type, 23 cases (20.2%) were the laminated type and 24 cases (21.0%) were the one-layer type. The average age in the solid type was 30.8 years, 23.8 years in the laminated type and 38.0 years in the one-layer type. Concerning the sites of periosteal new bone formation 94 out of 114 cases (82.5%) were in the mandibular body and 20 (17.5%) in the ascending ramus of the mandible. The extent of the periosteal new bone formation was far larger among the young. This was particularly remarkable in the ascending ramus of the mandible. These findings were proved to correlate with the age, the clinical symptoms, the route of infection and the condition of eruption in the lower molars.
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