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 (D)</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 (B)</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 (C)</p> Signup and view all the answers

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

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

Which type of ameloblastoma has a more favorable prognosis?

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

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

<p>Enucleation (A)</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 (C)</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 (B)</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) (D)</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 (A)</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 (D)</p> Signup and view all the answers

What is the prognosis of ameloblastoma?

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

Which type of ameloblastoma is the most common?

<p>Conventional or classical or intraosseous ameloblastoma (C)</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 (B)</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 (C)</p> Signup and view all the answers

What is the characteristic histopathological feature of extraosseous ameloblastoma?

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

What is the primary treatment option for malignant ameloblastomas?

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

What is the most common precursor of primary intraosseous carcinoma?

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

What is a characteristic feature of ameloblastic carcinoma?

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

What is the most common site of metastasis for ameloblastoma?

<p>Lungs (D)</p> Signup and view all the answers

What is the malignant counterpart of ameloblastoma?

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

What is the most common odontogenic tumor excluding odontomas?

<p>Ameloblastoma (B)</p> Signup and view all the answers

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

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

What is the most common benign odontogenic tumor?

<p>Ameloblastoma (D)</p> Signup and view all the answers

What is the characteristics of ameloblastoma?

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

What is the composition of mixed odontogenic tumors?

<p>Both odontogenic epithelium and ectomesenchyme (B)</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 (C)</p> Signup and view all the answers

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

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

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

<p>Marginal resection (A)</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 (D)</p> Signup and view all the answers

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

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

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

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

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

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

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

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

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

<p>5-22% (B)</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 (C)</p> Signup and view all the answers

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

<p>Ameloblastoma (A)</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 (D)</p> Signup and view all the answers

What is the characteristic feature of mixed odontogenic tumors?

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

What is the recommended treatment for extensive destructive ameloblastic fibroma?

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

What is the characteristic feature of odontomas?

<p>Mixed epithelial and mesenchymal tumor-like malformations (C)</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 (D)</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 (B)</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 (A)</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 (B)</p> Signup and view all the answers

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

<p>Amyloid protein (A)</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 (C)</p> Signup and view all the answers

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

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

What is the characteristic radiographic appearance of odontogenic myxoma?

<p>Honeycomb or soap bubble appearance (D)</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 (A)</p> Signup and view all the answers

What is the composition of mixed odontogenic tumors?

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

What is the most common type of benign odontogenic tumor?

<p>Odontoma (A)</p> Signup and view all the answers

What is the characteristic radiographic feature of cementoblastoma?

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

What is the primary composition of mixed odontogenic tumors?

<p>Both odontogenic epithelium and ectomesenchyme (A)</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 (D)</p> Signup and view all the answers

What is the characteristic histopathological feature of cementoblastoma?

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

What is the most common site of ameloblastic fibroma?

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

What is a characteristic clinical feature of odontomas?

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

What is the main difference between compound and complex odontoma?

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

What is the radiographic appearance of compound odontoma?

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

What is the macroscopic appearance of complex odontoma?

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

What is the prognosis of odontoma?

<p>Good (C)</p> Signup and view all the answers

What is the treatment of choice for odontoma?

<p>Surgical removal (D)</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 (C)</p> Signup and view all the answers

What is the characteristic histopathological feature of compound odontoma?

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

What is the radiographic appearance of complex odontoma?

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

What is the characteristic clinical feature of adenomatoid odontogenic tumor?

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

What is the classification of adenomatoid odontogenic tumor?

<p>Epithelial odontogenic tumor (B)</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 (D)</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 (D)</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 (D)</p> Signup and view all the answers

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