MDS PREP
The histopathology of osteopetrosis shows
1. Endosteal bone formation and lack of normal bone resorption
2. Periosteal bone formation and lack of normal bone resorption
3. Presence of numerous osteoclasts and a few osteoblasts
4. None of the above
Oral Pathology
Answer: 1
The histopathology of osteopetrosis shows endosteal bone formation and lack of normal bone resorption.
In the lipooxygenase pathway of the arachidonic acid metabolism, which of the following products helps to promote platelet aggregation and vasoconstriction?
1) C5a
2) Thromboxane A2
3) Leukotriene B4
4) C1 activators
General Pathology
Answer: 2
Thromboxane A2, produced in the lipooxygenase pathway, promotes platelet aggregation and vasoconstriction, playing a key role in hemostasis.
Hyperplasia or hypertrophy of minor salivary glands in the palate may be associated with all of the following except
1. Pernicious anaemia or iron deficiency anaemia
2. Alcoholism
3. Diabetes mellitus
4. Menopause
Oral Pathology
Answer: 1
Hyperplasia or hypertrophy of minor salivary glands in the palate is not typically associated with pernicious anemia.
Crew haircut appearance in X-ray skull and Gamna Gandy bodies are seen in -
1) G-6-PD deficiency
2) Hodgkin's lymphoma
3) Hereditary spherocytosis
4) Sickle cell anaemia
General Pathology
Answer: 4
Crew haircut appearance in X-ray skull and Gamna Gandy bodies are associated with sickle cell anemia due to chronic hemolysis and bone marrow hyperplasia.
Which of the following additional clinical findings would MOST be associated with a woman who has oral mucosal swelling, xerostomia, and intense salivary gland destructive inflammation?
1) Conjunctivitis
2) Goiter
3) Hemolytic anemia
4) Proximal muscle weakness
Conjunctivitis is often associated with Sj�gren's syndrome, which can cause oral mucosal swelling and xerostomia.
Most common areas of body susceptible to carcinomas:
1. Head and neck
2. Back
3. Pelvic and urogenital
4. Extremities
Pathology Answer: 1
Head and Neck: The head and neck region includes various structures such as
the oral cavity, nasal cavity, pharynx, larynx, and the salivary glands. This
region is highly susceptible to carcinomas due to the presence of mucosal
surfaces exposed to potential carcinogens. Common types of head and neck
carcinomas include:
- Oral Squamous Cell Carcinoma: This is the most common form of head and neck
cancer, typically occurring on the tongue, lips, oral cavity, and oropharynx.
Risk factors include tobacco use (smoking and smokeless), alcohol consumption,
and human papillomavirus (HPV) infection.
- Nasopharyngeal Carcinoma: This cancer arises from the nasopharynx and is often
associated with environmental factors such as the Epstein-Barr virus (EBV)
infection and dietary habits.
- Laryngeal Carcinoma: Cancer of the larynx (voice box) is often linked to
smoking and excessive alcohol intake.
The maximum permissible dose of radiation to the operator of an X-ray machine is
1. 0.05 rem per year
2. 0.5 rem per year
3. 5.0 rem per year
4. 50 rem per year
Oral Pathology
Answer: 3
The maximum permissible dose of radiation to the operator of an X-ray machine is 5.0 rem per year.
Slightly raised vesicles rupturing to form ulcers are a feature of
�� �1) �� �Rubeola
�� �2) �� �Rubella
�� �3) �� �Condyloma acuminatum
�� �4) �� �Chicken pox
Pathology Answer: 4
Chicken pox presents with multiple dermal lesions characteristically with vesicles, pustules which may secondarily ulcerate