Gene/Protein Disease Symptom Drug Enzyme Compound
Pivot Concepts:   Target Concepts:
Query: UMLS:C0029463 (osteosarcoma)
 16,637 document(s) hit in 31,850,051 MEDLINE articles (0.00 seconds)

After the description of the etiopathogenetic aspects and of the pathologic anatomy lesion more typical of the Paget's disease, the A.A. describe a interesting case of the mandible's degeneration in a patient with chronic osteoporosis. The patient does not masticate. The treatment has been to remodelling of the mandible. We made a scrupulous check of laboratory research and the radiographical, biological and histological reports to exclude osteosarcoma and gigantic cells tumour.
 ...
PMID:[Paget's degeneration of the juxta-alveolar portion of the mandible in subjects with generalized osteoporosis. Clinical study]. 264 53

Primary tumors of the vertebral column are rare: 20 per cent of all primary tumors of the spinal column. The distribution by type of tumor shows that the three most frequent primary tumors considered to be "radio and/or chemo resistant lesions" are the chordoma (15.5 to 24.5%), the chondrosarcoma (20%) and the giant cell tumor (10%). A second group with "chemo and/or radiosensitive lesions" include the Ewing sarcoma, primary lymphoma and plasmocytoma (5%). We consider a third group with the benign tumor: osteochondroma, chondroma, osteoid osteoma, osteoblastoma, aneurysmal bone cyst, hemangioma and eosinophilic granuloma (2 to 3%). The last tumoral group agrees with sarcomatous tumors: osteogenic sarcoma, fibrosarcoma, malignant fibro-histiocytoma, angiosarcoma and hemangio-pericytoma (1 to 3% of primary tumors of the vertebral column); they are most frequently secondary to Paget's disease, giant cell tumor or to radiation therapy and their prognosis is poor.
 ...
PMID:[Primary tumors of the spine. Initial oncologic aspects: epidemiology, anatomo-prognostic and therapeutic classification]. 269 50

Since 1927, 130 patients with well-documented malignant fibrous histiocytoma of bone have been diagnosed and treated at Memorial Hospital for Cancer and Allied Diseases. This sarcoma is 10 times less frequent than osteogenic sarcoma in this hospital. It most commonly occurred spontaneously (72%), whereas in the rest (28%) it followed previous radiation or various pre-existent osseous conditions, most often Paget's disease. The appendicular skeleton was the commonest site of involvement. The majority of the patients were middle-aged or older adults with a mean of 40.5 years of age; only 21.5% were 21 years or younger. Histologically, the lesions were subclassified as fibrous (62%), histiocytic or xanthomatous (30%), and malignant giant cell tumor (8%) variants. Older patients were more likely to have a secondary malignant fibrous histiocytoma, especially following radiation or Paget's disease. Overall survival estimates at 2 years and 5 years were 71% and 53%, respectively. Survival was not dependent on the histologic subtype of the lesion, but was strongly influenced by the histologic grade of malignancy. Important prognostic factors were the age of the patients and whether the lesions were primary de novo or secondary sarcomas: the older patients and those with secondary lesions did substantially worse.
 ...
PMID:The pathology of malignant fibrous histiocytoma of bone. A study of 130 patients. 300 Feb 4

Paget's disease of the bone occasionally transforms into sarcomatous tumors such as osteosarcoma. While Paget's disease demonstrates markedly increased uptake of bone scanning radiopharmaceutical, osteosarcomas complicating this condition often show decreased uptake. An unusual scan appearance of the osteosarcoma is presented in which the tumor showed intense uptake of the tracer on the bone scan. The extent of the sarcoma as delineated by the bone scan corresponded closely to the size of the lesion as seen on computerized tomography and magnetic resonance imaging and was confirmed at surgery.
 ...
PMID:Osteosarcoma arising in Paget's disease of the calvarium. 316 56

A review of the total number of cases of osteosarcoma referred to the Tumour Centre at the Rizzoli Orthopaedic Institute between 1904 and 1986, revealed 11 cases of the disease localised in the vertebrae, 9 of which were fully documented. We excluded secondary forms of the disease due to irradiation or malignant degeneration in Paget's disease, also metastases from osteosarcoma of the limbs localised in the sacrum. It is extremely important to distinguish osteosarcoma from osteoblastoma; and this problem is even more highlighted by the statistical evidence that both neoplasms have an almost equal probability of being localised in the spine. Treatment has progressed from the initial purely palliative approach to a more aggressive type of surgery which, in association with modern chemotherapy, makes it a more reliable type of treatment from the oncological point of view. To this aim, we emphasize the importance of performing biopsy according to the required criteria.
 ...
PMID:Vertebral osteosarcoma. 323 27

The authors report 12 cases (8 men and 4 women) of sarcomatous degeneration in Paget's bone disease, with an average age of 72.3 years. Sarcomatous degeneration occurred often in polyostotic Paget's disease, and osteitis deformans was seen in 4 cases. Femur and pelvis were the most affected bones. Pain was a constant feature, whereas tumefaction and fracture were less common. Osteolytic lesions were more frequent than condensed or mixed lesions and radiological signs of malignancy were usually found. Seven cases were histologically classified as osteogenic sarcoma and 3 cases as fibrosarcoma. Electron microscopy was performed on 2 osteogenic sarcomas and in 1 case revealed microcylindrical inclusions in Pagetic osteoclasts and in multinucleated giant tumor cells, but none in mononucleated tumor cells. The average survival time for the patients in this study was only 4.5 months.
 ...
PMID:Sarcomatous degeneration in Paget's bone disease. 347 35

The radiolabeled monoclonal antibody 791T/36 raised against a human osteosarcoma was injected into 20 patients with known or suspected bone tumors. Gamma camera images were acquired at 48 or 72 hours after injection, and assessed for antibody localization. Positive images were obtained in all five osteosarcomas and four other primary malignant sarcomas. Two of the four other primary bone tumors gave positive images. Three patients with trauma had negative images as did one patient with Paget's disease. Two patients with suppurative disease gave positive images. The antibody localized in the majority of malignant sarcomas tested. In one tumor where tissue was available, a tumor:non-tumor ratio of 2.8:1 was measured. Repeat imaging was performed in five patients. Immunoscintigraphy using the monoclonal antibody 791T/36 has shown tumor localization in patients with bone and soft tissue sarcomas.
 ...
PMID:Imaging of bone tumors using a monoclonal antibody raised against human osteosarcoma. 351 13

The authors studied 19 patients with well documented osteogenic sarcomas arising in the skull, which represent 1.6% of all osteogenic sarcomas registered during a 60-year period (1921-1981). Ten sarcomas were primary, de novo tumors. Nine others developed secondary osteogenic sarcomas; among these, six arose as a complication of Paget's disease, two followed irradiation, and one was associated with pre-existent fibrous dysplasia. The sarcomas arose in equal proportion in both sexes with the men being much older (mean age, 44 years) as compared to the women (mean age, 31 years). Patients with de novo osteogenic sarcomas were considerably younger than those with secondary lesions. Osteoblastic osteogenic sarcoma was by far the most common histologic variant in both the primary and the Paget's sarcomas. None of the patients with Paget's sarcoma lived longer than 1 year; the median survival here was 4 months. Patients with de novo osteogenic sarcomas fared much better and there are four long-term survivors (longer than 3 years) who are currently disease-free.
 ...
PMID:Osteogenic sarcoma of the skull. A clinicopathologic study of 19 patients. 386 Feb 81

The authors present the results of combined-modality treatment in eight patients with osteosarcoma of the skull. Six patients had de novo tumors, and two others had secondary sarcomas resulting from malignant transformation in Paget's disease. Wide surgical excision and combination chemotherapy were used in seven patients, and surgery and radiation therapy were employed in one case. Following chemotherapy, six patients underwent additional surgery. This aggressive approach resulted in four long-term survivors among the patients with de novo tumors. These data suggest that surgery in combination with chemotherapy provides the best potential for long-term disease control in patients with osteosarcoma of the skull.
 ...
PMID:Combined-modality treatment of osteogenic sarcoma of the skull. 386 91

Of 160 cases of osteosarcoma seen over an 18-year period, 18 were over the age of 40 at the time of presentation. The clinical presentation and histology of these cases is reviewed. Delay in referral and incorrect histological diagnoses were frequent. Only 2 cases were associated with Paget's disease.
 ...
PMID:Osteosarcoma after the fourth decade. A clinico-pathological review. 386 49


<< Previous 1 2 3 4 5 6 7 8 9 10 Next >>