• Benign tumors of the skull base include true neoplasms, inflammatory masses, cysts, and developmental anomalies occurring at the osseous interface between the brain and the underlying structures of the head and neck. (medscape.com)
  • A variety of benign tumors occur along the cranial base. (medscape.com)
  • The treatment of choice for the vast majority of benign skull base tumors is surgical excision. (medscape.com)
  • Benign skull base tumors can be classified into the pathogenetic and histologic groups listed below. (medscape.com)
  • Odontogenic myxomas are rare benign neoplasm of mesenchymal origin, comprising 3-6% of all odontogenic tumors. (pleasefireme.com)
  • Central odontogenic fibroma (COF) is an extremely rare benign tumor that accounts for 0.1% of all odontogenic tumors. (pleasefireme.com)
  • BENIGN ODONTOGENIC TUMORS, EPITHELIAL Ameloblastomas were classified as solid/multicystic, extraosseous/peripheral, desmoplastic, and unicystic types in the 2005 classification. (pleasefireme.com)
  • In this second part of the series, we explain how to distinguish a select group of primary malignant bone tumors requiring further imaging and clinical workup from benign, tumor-like conditions. (appliedradiology.com)
  • The most frequent bone tumors, osteochondromas represent 20-50% of benign tumors and 10-15% of all bone tumors. (appliedradiology.com)
  • Background: Benign fibro-osseous lesions (BFOL) comprise a diverse group of pathologies characterized by the replacement of normal bone by fibrous tissue and a mineralized product. (bvsalud.org)
  • I - fibrous dysplasia, II - reactive lesions arising in the tooth-bearing area, and III - fibro-osseous neoplasms. (bvsalud.org)
  • Many benign lesions cause mandibular swellings, and these can be divided into those of odontogenic and nono- dontogenic origin. (9lib.co)
  • In certain circumstances, diagnostic imaging can accurately predict whether a tumor is benign or malignant and can narrow differential diagnoses. (medscape.com)
  • Is Odontogenic myxoma benign or malignant? (pleasefireme.com)
  • A subtype of nonconventional "surface" osteosarcomas, periosteal osteosarcomas are rare, malignant neoplasms representing about 1% of all osteosarcomas. (appliedradiology.com)
  • Active ossifying fibroma must be separated from fibrous dysplasia, cementoblastoma, and meningioma. (wikipedia.org)
  • Methods: Thirty-two cases diagnosed as normal jaw bone (NJB, 8 cases), fibrous dysplasia (FD, 8 cases), cemento-osseous dysplasia (COD, 8 cases), and cemento-ossifying fibroma (COF, 8 cases) were selected. (bvsalud.org)
  • Odontogenic myxoma is a rare benign tumour of the jaw and characteristically presents as a slow, painless, bony expansion with resultant facial deformity. (pleasefireme.com)
  • Odontogenic myxoma (OM) is a rare benign painless, slow-growing lesion with local aggressive behavior. (pleasefireme.com)
  • Odontogenic myxoma is a benign but invasive tumor that has a high rate of recurrence after surgical removal (Speight, 2013). (pleasefireme.com)
  • What is an odontogenic fibroma? (pleasefireme.com)
  • This benign tumor is the most common odontogenic tumor. (pleasefireme.com)
  • What causes odontogenic fibroma? (pleasefireme.com)
  • Peripheral odontogenic fibroma (formerly known as fibromatous and ossifying epulis) is a benign, often slow-growing tumor that arises from periodontal structures (gums, ligaments, and bone). (pleasefireme.com)
  • Ameloblastoma is a true neoplasm of odontogenic epithelial origin. (9lib.co)
  • It is the second most common odontogenic neoplasm, and only odontoma outnumbers it in reported frequency of occurrence. (9lib.co)
  • Its incidence, combined with its clinical behavior, makes ameloblastoma the most significant odontogenic neoplasm. (9lib.co)
  • Adenomatoid odontogenic tumor (AOT) is an uncommon benign odontogenic lesion, with debatable histogenesis and variable histopathology. (ac.ir)
  • This tumor has gone by several names in the past, but active ossifying fibroma is similar to juvenile active ossifying fibroma, except it does not develop in young patients. (wikipedia.org)
  • This tumor is far less common than conventional ossifying fibroma, and is considered a rare tumor. (wikipedia.org)
  • Pain and sensory disturbance and fibro-osseous appearance in histopathology have been rarely reported in OM. (pleasefireme.com)
  • Aggressive psammomatoid ossifying fibroma is still employed by some, but is to be discouraged. (wikipedia.org)
  • It is a slow-growing, persistent, and locally aggressive neoplasm of epithelial origin. (9lib.co)
  • Accordingly, no accurate data regarding the incidence of benign skull base neoplasms are available. (medscape.com)
  • 9-11 The absence of the more obvious cloud-like osseous matrix, sclerosis, and bone destruction usually associated with conventional osteosarcoma makes periosteal osteosarcoma a diagnostic challenge. (appliedradiology.com)
  • A juvenile active ossifying fibroma is a benign fibro-osseous neoplasm composed of mixture of stroma and bone characterized by rapid and destructive growth. (wikipedia.org)
  • Key features that favor chondrosarcoma over benign enchondroma include deep cortical endosteal scalloping, cortical bone destruction, and extra-osseous extension. (appliedradiology.com)
  • A case of cemento-ossifying fibroma involving the right side of mandible is described in a 38 year-old male patient, with description of clinical, radiographic, and histologic features. (journalcra.com)
  • 5. Central Cemento-Ossifying Fibroma: Primary Odontogenic or Osseous Neoplasm? (nih.gov)
  • 8. Cemento-ossifying fibroma and benign cementoblastoma. (nih.gov)
  • 9. Cemento-ossifying fibroma--a rare case. (nih.gov)
  • 15. Juvenile aggressive cemento-ossifying fibroma. (nih.gov)
  • 18. Psammomatoid juvenile cemento-ossifying fibroma of the maxilla. (nih.gov)
  • Methods: Thirty-two cases diagnosed as normal jaw bone (NJB, 8 cases), fibrous dysplasia (FD, 8 cases), cemento-osseous dysplasia (COD, 8 cases), and cemento-ossifying fibroma (COF, 8 cases) were selected. (bvsalud.org)
  • The lesion is usually identified as a well demarcated, expansile mass with an ossified rim at the periphery. (wikipedia.org)
  • 4. Ossifying Fibroma of Non-odontogenic Origin: A Fibro-osseous Lesion in the Craniofacial Skeleton to be (Re-)considered. (nih.gov)
  • Macroscopic and radiographic assessment of this lesion provided a diagnosis of osteoma, a true neoplasm, or alternately, hyperplasia (e.g. exostosis) or hamartoma, which are not true neoplasms. (tamu.edu)
  • This suggested a likely fibro-osseous origin for this lesion, with a probable diagnosis of ossifying fibroma, or possibly osseous dysplasia. (tamu.edu)
  • Osteochondroma is the most common bone tumor and is the developmental lesion rather than the true neoplasm [ 1 ]. (hindawi.com)
  • Several loose bodies were seen on the ossified lesion in osteochondromatosis on computed tomography scans (Figures 3(a) and 3(b) ). (hindawi.com)
  • Cemento-ossifying fibromas are rare fibro-osseous benign neoplasms that are seen in the jaws. (journalcra.com)
  • 20. Osseous (cemento-osseous) dysplasia of the jaws: clinical and radiographic analysis. (nih.gov)
  • Active ossifying fibroma must be separated from fibrous dysplasia, cementoblastoma, and meningioma. (wikipedia.org)
  • Aggressive psammomatoid ossifying fibroma is still employed by some, but is to be discouraged. (wikipedia.org)
  • 19. [Clinical and pathological features and differential diagnosis of fibro-osseous tumors and dysplasias]. (nih.gov)
  • This study presents a differential diagnosis of benign mandibular tumours identified in two adult burials from the precontact Maya city of Tikal, Guatemala. (tamu.edu)
  • Tumour and blood samples were obtained from 3 patients with OF and one with juvenile ossifying fibroma (JOF). (nih.gov)
  • 13. Juvenile ossifying fibroma of the maxilla. (nih.gov)
  • Conclusion: The immunohistochemistry findings suggest that BFOL have different processes of osseous tissue production. (bvsalud.org)
  • Pathogenesis of osteochondroma is still controversial, but some osteochondromas can be replaced by osseous tissue through the process of enchondral ossification, and these chondromas are ossified over a period of time finally [ 2 ]. (hindawi.com)
  • Benign tumors of the skull base include true neoplasms, inflammatory masses, cysts, and developmental anomalies occurring at the osseous interface between the brain and the underlying structures of the head and neck. (medscape.com)
  • Since the reported patient has a resected abdominal neoplasm, it may be overlooked or confused with recurrence of the malignant disease. (saudijournals.com)
  • At the 1-year follow-up visit, she continued to have minor discomfort and slight swelling on the posteromedial aspect of the right ankle but had no recurrence of the ossified loose bodies. (hindawi.com)
  • 3. Distinguishing features of focal cemento-osseous dysplasias and cemento-ossifying fibromas: I. A pathologic spectrum of 316 cases. (nih.gov)
  • This study provides the first reported cases of possible benign mandibular tumours in the ancient Maya. (tamu.edu)
  • The growth of the osseous mass displaced the right first premolar anteriorly. (tamu.edu)