What's the difference between osteoma and tumour?

Osteoma


Definition:

  • (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.

Tumour


Definition:

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) At operation, the tumour was identified and excised with part of the aneurysmal wall.
  • (3) When perfusion of the affected lung was less than one-third of the total the tumour was found to be unresectable.
  • (4) Some S-100 reactive cells previously interpreted as tumour cells were refound in a few tumours.
  • (5) An association of cyclophosphamide, fluorouracil and methotrexate already employed with success against solid tumours in other sites was used in the treatment of 62 patients with advanced tumours of the head and neck.
  • (6) Ten out of 12 (83%) tumours which had c-erbB-2 and c-erbA co-amplification had metastasised to axillary lymph nodes (P less than 0.006).
  • (7) These data indicate that RNA faithfully transfers "suppressive" as well as "positive" types of immune responses that have been reported previously for lymphocytes obtained directly from tumour-bearing and tumour-immune animals.
  • (8) These are rare tumours comparable to abdominal desmoid tumours.
  • (9) Over the past decade the use of monoclonal antibodies has greatly advanced our knowledge of the biological properties and heterogeneity that exist within human tumours, and in particular in lung cancer.
  • (10) Tumour necrosis factor (TNF), a polypeptide produced by mononuclear phagocytes, has been implicated as an important mediator of inflammatory processes and of clinical manifestations in acute infectious diseases.
  • (11) Expression of AR was compared with that of ER and PR as well as with tumour grade and age.
  • (12) The risk of recurrence and progression in 170 patients presenting with pTa urothelial tumours of the bladder has been estimated so that follow-up can be rationalised.
  • (13) Instead, the White House opted for a low-key approach, publishing a blogpost profiling Trinace Edwards, a brain-tumour victim who recently discovered she was eligible for Medicaid coverage.
  • (14) Finally, 10 patients had an intra- and extrasellar tumour (group III).
  • (15) Four patients with tumours larger than 2 cm died from metastatic carcinoid.
  • (16) We conclude that 1H MRS has a clear role in the diagnosis and biochemical assessment of intracranial tumours and in the evaluation and monitoring of therapy.
  • (17) The independent but combined use of both antigens, appreciably raises the diagnostic success percentage with regard to that obtained when only one tumour marker was used.
  • (18) We describe 10 patients with cerebral venous thrombosis: two had protein S deficiency, one had protein C deficiency, one was in early pregnancy, and there was a single case of each of the following: dural arteriovenous malformation, intracerebral arteriovenous malformation, bilateral glomus tumours, systemic lupus erythematosus, Wegener's granulomatosis, non-Hodgkin's lymphoma.
  • (19) All patients in Stages I and II (5 out of 26) who developed metastases had poorly differentiated (histological Type III) tumours.
  • (20) Three angiographic observations showing partial mesenteric vascularisation of renal tumours were made.

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