MCQs in Oral Pathology

Chapter 5: Pigmented Lesions

 

1- Which of the following is the most likely (among them) to turn malignant:

 

  1. Intradermal Nevus
  2. Junctional Nevus
  3. Blue Nevus
  4. Compound Nevus

 

 

 

 

 

 

The answer is: B

 

2-Amalgam tattoo is a common oral lesion that must be differentiated through clinical history or biopsy from which of the following:

  1. Chronic infection
  2. Squamous cell carcinoma
  3. Early melanoma
  4. Hereditary hemorrhagic telangiectasias
  5. Gardner's syndrome

 

 

 

 

 

The answer is: C

 

3-Which of the following is considered to be a high-risk site for the development of oral melanoma:

  1. Upper lip
  2. Lower lip
  3. Palate
  4. Tongue
  5. Buccal mucosa

 

 

 

 

 

The answer is: C

 

4-Lateral or radial spread at the epithelial-connective tissue interface is a characteristic growth feature of which of the following pigmented lesions:

  1. Blue nevus
  2. Ephelis
  3. In situ melanoma
  4. Invasive melanoma
  5. Amalgam tattoo

 

 

 

 

 

The answer is: C

 

5-All of the following suggest the possibility of intraoral melanoma EXCEPT:

  1. Rapid increase in size
  2. Satellite lesions
  3. Ulceration
  4. Bilateral symmetric lesions
  5. Darkening color

 

 

 

 

 

 

The answer is: D

 

6-Both in situ and invasive oral melanomas exhibit the same distinctive site predilection. This is the

  1. Buccal mucosa
  2. Palate
  3. Lateral tongue
  4. Lower lip
  5. Tonsillar pillar

 

 

 

 

 

 

The answer is: B

 

7-Which of the following can have clinical features that are similar to early superficial or in situ melanoma:

  1. Early Kaposi's sarcoma
  2. Amalgam tattoo
  3. Drug-induced pigmentation
  4. Melanotic macule
  5. All of the above

 

 

 

 

 

The answer is: E

 

8-A 37-year-old man presents with a blue-black macule (1 × 1 cm) in his palate. The area is covered with intact epithelium and there was no apparent inflammatory response. Biopsy shows deposits of black foreign material. This suggests which of the following:

  1. Kaposi's sarcoma
  2. Melanoma
  3. Amalgam tattoo
  4. Erythroplakia
  5. Melanotic macule

 

 

 

 

 

 

The answer is: C

 

9-Oral melanomas are classified into microscopic subtypes based primarily on which of the following feature:

  1. Evidence of invasion of lymphatic vascular spaces
  2. Microscopic growth pattern
  3. Number of mitotic figures
  4. Nuclear pleomorphism
  5. Evidence of lymph node metastasis

 

 

 

 

 

The answer is: B

 

10-Generally, which of the following has the worst prognosis:

  1. Oral verrucous carcinoma
  2. Cutaneous basal cell carcinoma
  3. Cutaneous melanoma
  4. Oral melanoma
  5. Oral erythroplasia

 

 

 

 

 

 

The answer is: D

 

11-Which of the following pigmented lesions of oral mucosa is most commonly encountered in dental patients:

  1. Freckles (ephelides)
  2. Intramucosal nevus
  3. Melanoma
  4. Amalgam tattoo
  5. Bismuth line

 

 

 

 

 

 

The answer is: D

 

12-All the following drugs are known to have the ability to cause pigmentation of the oral mucosa EXCEPT:

  1. Dilantin
  2. Minocycline
  3. Cytoxan
  4. AZT (zidovudine)

 

 

 

 

 

 

The answer is: A