MDS PREP
The substance most commonly used for protection against X-ray radiations is
1. Zinc
2. Steel
3. Lead
4. Porcelain
Oral Pathology
Answer: 3
Lead is the most commonly used substance for protection against X-ray radiation.
A patient exhibits radiolucent areas in the jaw bones which stimulate both periapical and periodontal lesions. The serum calcium is 13.5 mg% and serum phosphorus is 2.3 mg%. A biopsy from one of the radiolucent areas reveals a giant cell lesion. The most likely diagnosis is
1. Hyperparathyroidism
2. Hypoparathyroidism
3. Hultiple myeloma
4. Muxoedema
Oral Pathology
Answer: 1
The most likely diagnosis for the patient is hyperparathyroidism, given the symptoms and lab findings.
Oral manifestation of infectious mononucleosis is most commonly
1. Bluish red spots opposite maxillary molar
2. Pseudomembrane on gingival
3. Pinpoint petechiae on the palate
4. Gingival hyperplasia
Oral Pathology
Answer: 3
Pinpoint petechiae on the palate is the most common oral manifestation of infectious mononucleosis.
Which of the following is NOT a typical feature of Paget disease of bone?
1) Mosaic pattern of newly formed woven bone
2) Increased hat size
3) Hypertension
4) Osteosclerotic bones in late stages
Hypertension is not a typical feature of Paget disease of bone; it is characterized by a mosaic pattern of newly formed woven bone.
The epithelium which covers a healed ulcer is derived from
1. undifferentiated mesenchymal cells of the ulcer
2. intact epithelium at the ulcer margin
3. transformation of fibroblasts to epithelial cells
4. endothelial cells via the blood stream
Oral Pathology Answer: 2
The epithelium which covers a healed ulcer is derived from intact epithelium at the ulcer margin
For extraction in a leukaemic patient
1. Consult physician
2. Obtain WBC count
3. Ontain platelet count
4. All of the above
Oral Pathology
Answer: 4
For extraction in a leukemic patient, all of the above steps should be taken.
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.
In treatment of oral cancers, the fraction of total dose given in each appointment is in the range of
1. 150 rad
2. 300 rad
3. 400 rad
4. 500 rad
Oral Pathology
Answer: 1
In the treatment of oral cancers, the fraction of total dose given in each appointment is typically around 150 rad.