(n.) A tumor composed mainly of bone; a tumor of a bone.
Example Sentences:
(1) The radiological and macroscopic features were identical with osteoid osteoma.
(2) The author maintains that the osteoma of the brachial muscle as well as post-traumatic periarticular calcifications, occur in the muscle mass or in the tendon that prolongs it, or in the articular capsule, as a result of surgical treament and post-operative immobilization, and only exceptionally following orthopaedic treatment of traumatic lesions.
(3) Examples include the specific pattern of hypodontia seen before the development of iris dysplasia in Rieger syndrome, and the presence of supernumerary teeth and facial osteomas preceding malignant transformation of intestinal polyps in Gardner syndrome.
(4) Complications due to orbital or intracranial development of the osteoma are rare and demand neurosurgical treatment.
(5) In Paget's disease, there was shown a relative increase in the oligopeptide fraction, whereas the polypeptide fraction was increased in osteoma.
(6) A bucco-lingual cross action through the mandible in the canine area revealed central osteomas.
(7) The frequencies in the two groups are as follows: In the benign group, osteoma had the highest incidence and then, with decreasing frequencies: osteochondroma, chondroma, synovioma, giant cell tumor, ossifying fibroma, osteoid osteoma, chondromyxoid fibroma.
(8) Button osteomas affect two animals and are the only neoplastic conditions observed.
(9) Other cells present in osteoid osteoma besides osteocytes included osteoprogenitor cells resembling Scott type A and B cells and cells in transitional stages of differentiation.
(10) Osteoid osteomas were removed by CT-guided core drill excision of the nidus in 4 patients.
(11) Juxta-articular osteoid osteomas often show an absent or small perifocal osteosclerosis, whereas a laminar periosteal reaction was seen in all own cases.
(12) Within a period of 16 months, 25 osteomas of the paranasal sinuses were observed.
(13) Osteoid osteoma is a benign osteoblastic tumor usually diagnosed by conventional radiography.
(14) In the light of our investigations (29 phthitic or chronically hypotonic eyes, 12 of them with intraocular bone formation) and the literature primary osteomas of the choroid have to be interpreted more likely as secondary processes, possibly following a (birth-)trauma, than as congenital choristomas.
(15) Thirteen cases of osteoid osteoma demonstrated with computerized tomography are reported.
(16) Juxtaarticular osteoid osteomas in the ankle are frequently misdiagnosed because their symptoms mimic arthritis and may precede roentgenographic findings.
(17) This is a case report of a 13-year-old boy with an osteoid-osteoma located in the pedicle of the third lumbar vertebra.
(18) Recent progress in radiology for management of bone tumors (scintigraphy, angiography) have given greater accuracy in the preoperative diagnosis of osteoid osteoma.
(19) The authors describe a clinic case regarding a 23 year-old man affected by an osteoid osteoma of the hip's posterior edge of the cotyloid cavity.
(20) If the diagnosis is still unclear, selective angiography may reveal the tumor blush typical of osteoid osteoma.
Osteosarcoma
Definition:
(n.) A tumor having the structure of a sacroma in which there is a deposit of bone; sarcoma connected with bone.
Example Sentences:
(1) In contrast to previous reports, these tumours were more malignant than osteosarcomas and showed a five-year survival rate of only 4-2 per cent.
(2) Lung metastases leading to death were observed in one patient with small-cell osteosarcoma despite complete destruction of the primary tumor by preoperative chemotherapy.
(3) A case of osteosarcoma of the tongue is reported, with microscopic findings.
(4) The uterine osteosarcoma is the seventh case reported in the world, while it is the second case of synchronous triple primary tumors of the upper female genital tract.
(5) Children with osteosarcoma or Ewing's sarcoma rarely have bone disease distant from the site of their primary bone lesion at presentation.
(6) The radiological differential diagnosis includes neuroblastoma, leukaemic infiltration, lymphoma, histiocytosis X, solitary and multifocal osteosarcoma and other deposits.
(7) Bone sarcomas (mostly osteosarcomas) were the main radiation-induced cancer.
(8) The reliability of a simple method evaluating the pattern of subcellular binding of Adriamycin (Adriamycin binding assay, ABA) as an index of sensitivity was demonstrated in different primary cultures and in sensitive and resistant cell lines of human osteosarcoma.
(9) The patterns of relapse and long-term survival were studied in relation to the skip lesions, and these patterns were compared with those of 224 patients who had Stage-II osteosarcoma but no skip lesion.
(10) A histologically confirmed malignant, primary bone tumour in the pelvis, presumably an osteosarcoma, underwent spontaneous regression.
(11) Osteosarcoma cells grown in normal culture medium secrete bone gamma-carboxyglutamic acid protein (BGP, osteocalcin) which is identical with BGP purified from the bone matrix.
(12) We applied DNA-RNA cytofluorometry with AO stain to cell kinetic analysis of osteosarcoma in a 12-year-old girl in relation to its histological characteristics.
(13) The radiological picture of the amputation stump after osteosarcoma was reviewed in 75 cases, in which postoperative follow-up ranged from a minimum four months, to a maximum of over 12 years.
(14) The latent periods varied from 8 to 11 years from completion of radiotherapy treatment to development of osteosarcoma.
(15) We have investigated the transfer of specific cell-mediated immunity (CMI) to osteosarcoma-associated antigens (OSAA) to hamsters with dialyzable leukocyte extracts (DLE) from OSAA-immunized rabbits.
(16) The exercretion of urinary total glycosaminoglycans (GAG) in a case of Rothmund Thomson syndrome associated with osteosarcoma was increased about 2--3 times that of normal control.
(17) Thus, there is no evidence that the paternal RB1 allele is preferentially retained in retinoblastoma, as has been suggested to be the case in osteosarcoma.
(18) Pleural metastatic disease in osteosarcoma has been seldom reported.
(19) The value of Magnetic Resonance (MR) imaging was examined in the anatomical staging of bone osteosarcomas.
(20) An extraskeletal osteosarcoma occurring the cervical region of a 51-year-old man 30 years after a cerebral arteriogram is presented.