Histopathological Features of Oral Pathologies
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Questions and Answers

What is the primary site of metastasizing ameloblastoma?

  • Maxilla
  • Posterior gingival and alveolar mucosa
  • Alveolar bone
  • Mandible (correct)

    • What radiographic feature is associated with ameloblastoma?

  • Radiopacity
  • Negative in x-ray (correct)
  • Cortical resorption
  • Bone expansion

    • What is the characteristic that defines metastasizing ameloblastoma?

  • Clinical behavior (correct)
  • Location in the jaw
  • Histopathological appearance
  • Radiographic features

    • What is the treatment of choice for extraosseous ameloblastoma?

    <p>Conservative surgical excision</p> Signup and view all the answers

    What is a characteristic histopathological feature of intraosseous ameloblastoma that can also be seen in extraosseous ameloblastoma?

    <p>All histopathological features</p> Signup and view all the answers

    What is the primary reason for the surgical removal of ameloblastoma with a safety margin?

    <p>To prevent recurrence</p> Signup and view all the answers

    What is the significance of the different histopathologic patterns of ameloblastoma?

    <p>They have no clinical significance</p> Signup and view all the answers

    Which type of ameloblastoma has a more favorable prognosis?

    <p>Luminal and intraluminal unicystic ameloblastoma</p> Signup and view all the answers

    What is the recommended treatment for luminal and intraluminal unicystic ameloblastoma?

    <p>Enucleation</p> Signup and view all the answers

    What is the recommended reading material for students to review the histopathological classification of odontogenic tumors?

    <p>Both of the above</p> Signup and view all the answers

    What is the characteristic histopathological feature of the follicular pattern of basal cell ameloblastoma?

    <p>Composed of nests of uniform basaloid cells</p> Signup and view all the answers

    What is the primary reason for the desmoplastic pattern of ameloblastoma?

    <p>Increased production of transforming growth factor B (TGF-B)</p> Signup and view all the answers

    What is the main reason for including an area of bone beyond the apparent radiographic margin in the treatment of ameloblastoma?

    <p>Because the tumor tends to infiltrate between intact cancellous bone trabeculae before bone resorption becomes radiographically evident</p> Signup and view all the answers

    What is the characteristic feature of the plexiform pattern of ameloblastoma?

    <p>Long anastomosing cords of odontogenic epithelium in connective tissue stroma</p> Signup and view all the answers

    What is the prognosis of ameloblastoma?

    <p>It has a high recurrence rate</p> Signup and view all the answers

    Which type of ameloblastoma is the most common?

    <p>Conventional or classical or intraosseous ameloblastoma</p> Signup and view all the answers

    What is the characteristic radiographic feature of ameloblastoma?

    <p>Multilocular radiolucency with a honeycomb or soap-bubble appearance</p> Signup and view all the answers

    What is the clinical behavior of metastasizing ameloblastoma?

    <p>It is a highly aggressive tumor with rapid metastasis</p> Signup and view all the answers

    What is the characteristic histopathological feature of extraosseous ameloblastoma?

    <p>Mixed follicular and plexiform pattern</p> Signup and view all the answers

    What is the primary treatment option for malignant ameloblastomas?

    <p>Surgical excision</p> Signup and view all the answers

    What is the most common precursor of primary intraosseous carcinoma?

    <p>Radicular/residual cysts</p> Signup and view all the answers

    What is a characteristic feature of ameloblastic carcinoma?

    <p>Presence of dysplasia</p> Signup and view all the answers

    What is the most common site of metastasis for ameloblastoma?

    <p>Lungs</p> Signup and view all the answers

    What is the malignant counterpart of ameloblastoma?

    <p>Ameloblastic carcinoma</p> Signup and view all the answers

    What is the most common odontogenic tumor excluding odontomas?

    <p>Ameloblastoma</p> Signup and view all the answers

    What is the primary composition of odontogenic tumors of the jaws?

    <p>Odontogenic epithelium and ectomesenchyme</p> Signup and view all the answers

    What is the most common benign odontogenic tumor?

    <p>Ameloblastoma</p> Signup and view all the answers

    What is the characteristics of ameloblastoma?

    <p>Progressively growing with a tendency for local recurrence</p> Signup and view all the answers

    What is the composition of mixed odontogenic tumors?

    <p>Both odontogenic epithelium and ectomesenchyme</p> Signup and view all the answers

    Where are odontogenic tumors typically found?

    <p>Exclusively in the mandible and maxilla, and occasionally in the gingiva</p> Signup and view all the answers

    What is the primary location where unicystic ameloblastoma most commonly occurs?

    <p>Mandible posterior region</p> Signup and view all the answers

    Which of the following histopathologic variants of unicystic ameloblastoma is characterized by a cyst wall lined totally or partially by ameloblastic epithelium?

    <p>Luminal</p> Signup and view all the answers

    What is the recommended treatment for mural type of unicystic ameloblastoma?

    <p>Marginal resection</p> Signup and view all the answers

    What is the characteristic feature of extraosseous peripheral ameloblastoma?

    <p>Painless, sessile, exophytic mass with smooth or papillary surface</p> Signup and view all the answers

    What is the recommended follow-up period for unicystic ameloblastoma?

    <p>At least 25 years</p> Signup and view all the answers

    Which of the following is a characteristic radiographic feature of unicystic ameloblastoma?

    <p>Well-defined unilocular radiolucency</p> Signup and view all the answers

    What is the age range when unicystic ameloblastoma is usually diagnosed?

    <p>2nd decade</p> Signup and view all the answers

    What is the most common association with unicystic ameloblastoma on radiographs?

    <p>Unerupted tooth</p> Signup and view all the answers

    What is the term for the ameloblastoma that occurs in the soft tissue of gingiva or edentulous alveolar areas?

    <p>Extraosseous ameloblastoma</p> Signup and view all the answers

    What is the percentage of all ameloblastomas that unicystic ameloblastoma accounts for?

    <p>5-22%</p> Signup and view all the answers

    What defines a benign odontogenic tumor composed of both odontogenic epithelium and ectomesenchyme?

    <p>Combination of both epithelial and ectomesenchymal origin</p> Signup and view all the answers

    What is the most common type of odontogenic tumor that arises from odontogenic epithelium only?

    <p>Ameloblastoma</p> Signup and view all the answers

    What is the composition of odontogenic tumors that arise from odontogenic ectomesenchyme only?

    <p>Dental papilla and dental follicle</p> Signup and view all the answers

    What is the characteristic feature of mixed odontogenic tumors?

    <p>Combination of both epithelial and ectomesenchymal origin</p> Signup and view all the answers

    What is the significance of understanding the spectrum of odontogenic tumors?

    <p>To understand the variation in radiological and histopathological features</p> Signup and view all the answers

    What is a characteristic feature of ameloblastic fibroma on radiographic examination?

    <p>Well-defined unilocular or multilocular radiolucent lesion</p> Signup and view all the answers

    What is the primary component of the mesenchymal portion of an ameloblastic fibroma?

    <p>Myxoid tissue with stellate cells</p> Signup and view all the answers

    What is the recommended treatment for extensive destructive ameloblastic fibroma?

    <p>Radical surgical removal</p> Signup and view all the answers

    What is the characteristic feature of odontomas?

    <p>Mixed epithelial and mesenchymal tumor-like malformations</p> Signup and view all the answers

    What is the primary concern for patients with Gardner's syndrome?

    <p>High risk of transformation of colorectal polyps into adenocarcinoma</p> Signup and view all the answers

    What is the typical location of Calcifying Epithelial Odontogenic Tumor (Pindborg tumor)?

    <p>Posterior area of the mandible</p> Signup and view all the answers

    What is the characteristic histopathological feature of Calcifying Epithelial Odontogenic Tumor (Pindborg tumor)?

    <p>Discrete islands of neoplastic epithelial cells with prominent intercellular bridges</p> Signup and view all the answers

    What is a common radiographic feature of Calcifying Epithelial Odontogenic Tumor (Pindborg tumor)?

    <p>A well-circumscribed, multilocular radiolucency</p> Signup and view all the answers

    What is the characteristic protein secreted by Calcifying Epithelial Odontogenic Tumor (Pindborg tumor)?

    <p>Amyloid protein</p> Signup and view all the answers

    What is the histopathological feature of Calcifying Epithelial Odontogenic Tumor (Pindborg tumor) that may raise the possibility of malignancy?

    <p>Pleomorphism of nuclei</p> Signup and view all the answers

    What is the age range of patients commonly affected by odontogenic myxoma?

    <p>1-73</p> Signup and view all the answers

    What is the characteristic radiographic appearance of odontogenic myxoma?

    <p>Honeycomb or soap bubble appearance</p> Signup and view all the answers

    What is the histopathological characteristic of odontogenic myxoma?

    <p>Loosely textured tissue with large stellate or fusiform cells</p> Signup and view all the answers

    What is the composition of mixed odontogenic tumors?

    <p>Both odontogenic epithelium and ectomesenchyme</p> Signup and view all the answers

    What is the most common type of benign odontogenic tumor?

    <p>Odontoma</p> Signup and view all the answers

    What is the characteristic radiographic feature of cementoblastoma?

    <p>A radiopaque mass with a thin radiolucent rim</p> Signup and view all the answers

    What is the primary composition of mixed odontogenic tumors?

    <p>Both odontogenic epithelium and ectomesenchyme</p> Signup and view all the answers

    What is the treatment of choice for cementoblastoma?

    <p>Surgical extraction of the tooth together with the attached calcified mass</p> Signup and view all the answers

    What is the characteristic histopathological feature of cementoblastoma?

    <p>Calcified cementum-like material with reversal lines</p> Signup and view all the answers

    What is the most common site of ameloblastic fibroma?

    <p>Posterior mandible</p> Signup and view all the answers

    What is a characteristic clinical feature of odontomas?

    <p>They are frequently associated with unerupted tooth</p> Signup and view all the answers

    What is the main difference between compound and complex odontoma?

    <p>Macroscopic appearance</p> Signup and view all the answers

    What is the radiographic appearance of compound odontoma?

    <p>A collection of tooth-like structures</p> Signup and view all the answers

    What is the histopathological feature of complex odontoma?

    <p>Mature tubular dentin that encloses clefts or hollow circular structures</p> Signup and view all the answers

    What is the macroscopic appearance of complex odontoma?

    <p>A white bony hard mass</p> Signup and view all the answers

    What is the prognosis of odontoma?

    <p>Good</p> Signup and view all the answers

    What is the treatment of choice for odontoma?

    <p>Surgical removal</p> Signup and view all the answers

    What is the difference between compound and complex odontoma in terms of location?

    <p>Compound odontoma occurs in the anterior maxilla, while complex odontoma occurs in the posterior mandible</p> Signup and view all the answers

    What is the characteristic histopathological feature of compound odontoma?

    <p>Multiple structures resembling small single rooted teeth</p> Signup and view all the answers

    What is the radiographic appearance of complex odontoma?

    <p>A disorganized mass of calcified tissue</p> Signup and view all the answers

    What is the characteristic clinical feature of adenomatoid odontogenic tumor?

    <p>Painless expansion of bone</p> Signup and view all the answers

    What is the classification of adenomatoid odontogenic tumor?

    <p>Epithelial odontogenic tumor</p> Signup and view all the answers

    What is the characteristic radiographic feature of adenomatoid odontogenic tumor?

    <p>Well-defined unilocular radiolucency with fine radiopacities</p> Signup and view all the answers

    What is the significance of the tumor's capsule in adenomatoid odontogenic tumor?

    <p>It allows easy removal from bone</p> Signup and view all the answers

    What is the characteristic histopathological feature of adenomatoid odontogenic tumor?

    <p>Masses, sheets or strands of spindle cells in scanty fibrous stroma</p> Signup and view all the answers

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