Lipoma Variants Histology Quiz

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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?

Stage I L1 P0 Signup and view all the answers

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

Lingual aspect of lower alveolar mucosa Signup and view all the answers

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

50% Signup and view all the answers

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

Myxoid lipoma Signup and view all the answers

Where do most liposarcomas reported in the mouth typically arise?

Cheek Signup and view all the answers

What is the characteristic color of a haemangioma?

Reddish-purple Signup and view all the answers

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

Cheeks Signup and view all the answers

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

Hamartoma Signup and view all the answers

How do lipomas typically feel when palpated?

Squishy Signup and view all the answers

Which type of haemangioma is the most common in children?

Capillary haemangioma Signup and view all the answers

At what age do most haemangiomas tend to mostly resolve?

9 years Signup and view all the answers

Which treatment option involves strangulation of the feeder vessel?

Strangulation of the feeder vessel Signup and view all the answers

What vascular anomaly affects the veins under the oral mucosa?

Sublingual varicosities Signup and view all the answers

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

Kaposi's sarcoma Signup and view all the answers

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

Sturge-Weber syndrome Signup and view all the answers

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

Radiopaque mass surrounded by a radiolucent rim Signup and view all the answers

Which histopathologic feature is characteristic of the described tumors?

Rimming trabeculae with cementum-like tissue Signup and view all the answers

What distinguishes a malignant ameloblastoma from a benign ameloblastoma?

Metastasis to distant sites or lymph nodes Signup and view all the answers

How does an ameloblastic carcinoma differ from a malignant ameloblastoma?

Hyperchromatism and mitoses Signup and view all the answers

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

Metastasizing to distant sites Signup and view all the answers

Which feature distinguishes an ameloblastic carcinoma from an epidermoid carcinoma?

Presence of mitoses 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?

Reticular lichen planus Signup and view all the answers

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

Plaque-like lichen planus 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?

Atrophic oral lichen planus 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?

Erosive lichen planus 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?