Lipoma Variants Histology Quiz
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Questions and Answers

What is the main reason why leukoplakia is not diagnosed based on specific histopathological features?

  • Histopathologic grading (correct)
  • Chronic inflammatory infiltration in lamina propria
  • Varying degrees of Keratosis
  • Varying degrees of epithelial thickness
  • According to WHO, which level of epithelial involvement corresponds to severe dysplasia?

  • Upper (correct)
  • Middle
  • Lower third
  • Complete epithelium
  • Which type of leukoplakia shows the highest rate of malignant transformation?

  • Speckled leukoplakia (correct)
  • Homogenous leukoplakia
  • Non-homogenous leukoplakia
  • Ventral surface leukoplakia
  • In the OLEP staging system, which stage indicates leukoplakia without epithelial dysplasia?

    <p>Stage I L1 P0</p> Signup and view all the answers

    Which site in the oral cavity shows a higher risk of malignant transformation for leukoplakia?

    <p>Lingual aspect of lower alveolar mucosa</p> Signup and view all the answers

    What percentage of non-homogenous leukoplakia are more dysplastic according to the text?

    <p>50%</p> Signup and view all the answers

    Which type of tumour is characterized by a circumscribed mass of mature adipose tissue?

    <p>Myxoid lipoma</p> Signup and view all the answers

    Where do most liposarcomas reported in the mouth typically arise?

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

    What is the characteristic color of a haemangioma?

    <p>Reddish-purple</p> Signup and view all the answers

    In what region do haemangiomas most commonly occur in the oral cavity?

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

    Which term best describes a hamartomatous lesion with abnormal and excessive formation of normal tissues?

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

    How do lipomas typically feel when palpated?

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

    Which type of haemangioma is the most common in children?

    <p>Capillary haemangioma</p> Signup and view all the answers

    At what age do most haemangiomas tend to mostly resolve?

    <p>9 years</p> Signup and view all the answers

    Which treatment option involves strangulation of the feeder vessel?

    <p>Strangulation of the feeder vessel</p> Signup and view all the answers

    What vascular anomaly affects the veins under the oral mucosa?

    <p>Sublingual varicosities</p> Signup and view all the answers

    What type of lesion is commonly found in the mouth of patients with AIDS?

    <p>Kaposi's sarcoma</p> Signup and view all the answers

    Which syndrome involves hemangioma of the face extending over branches of the trigeminal nerve?

    <p>Sturge-Weber syndrome</p> Signup and view all the answers

    What radiographic feature is typically seen in the described jaw tumors?

    <p>Radiopaque mass surrounded by a radiolucent rim</p> Signup and view all the answers

    Which histopathologic feature is characteristic of the described tumors?

    <p>Rimming trabeculae with cementum-like tissue</p> Signup and view all the answers

    What distinguishes a malignant ameloblastoma from a benign ameloblastoma?

    <p>Metastasis to distant sites or lymph nodes</p> Signup and view all the answers

    How does an ameloblastic carcinoma differ from a malignant ameloblastoma?

    <p>Hyperchromatism and mitoses</p> Signup and view all the answers

    What does the term 'malignant ameloblastoma' mean in relation to behavior?

    <p>Metastasizing to distant sites</p> Signup and view all the answers

    Which feature distinguishes an ameloblastic carcinoma from an epidermoid carcinoma?

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

    Which type of lichen planus is the most common and characterized by fine, radiant, slightly raised white striae in an interlocking lace-like pattern?

    <p>Reticular lichen planus</p> Signup and view all the answers

    Which type of lichen planus resembles leukoplakia but is multifocal in distribution and common in smokers?

    <p>Plaque-like lichen planus</p> Signup and view all the answers

    What subtype of lichen planus presents as diffuse red lesions with white striae radiating peripherally, usually found on the attached gingiva?

    <p>Atrophic oral lichen planus</p> Signup and view all the answers

    Which type of lichen planus is the second most common and is characterized by irregular lesions covered with a fibrinous plaque or a pseudomembrane?

    <p>Erosive lichen planus</p> Signup and view all the answers

    Which type of lichen planus has lesions that are smooth flat areas to irregular elevated areas and are common on the dorsum of the tongue?

    <p>Plaque-like lichen planus</p> Signup and view all the answers

    What is the prevalence range of oral lichen planus among the general population?

    <p>0.5%-2.3%</p> Signup and view all the answers

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