Saw toothed Rete Pegs are seen in:

 #  Saw toothed Rete Pegs are seen in:

A. Lichen planus

B. Lichenoid reaction

C. Leukoplakia

D. Leukoedema

The correct answer is A. Lichen Planus.

Histopathologic examination of lesional tissue is the most relevant investigation in cases of Oral Lichen Planus. Typical findings include hyperparakeratosis or hyperorthokeratosis with thickening of the granular layer, acanthosis with intracellular edema of the spinous cells in some instances, the development of a ‘saw tooth’ appearance of the rete pegs. Band-like subepithelial mononuclear infiltrate consisting of T-cells and histiocytes; increased numbers of intraepithelial T-cells; and degenerating basal keratinocytes that form colloid (Civatte, hyaline, cytoid) bodies, which appear as homogenous eosinophilic globules are consistently seen.

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Bleeding joints is a characteristic feature of:

 #  Bleeding joints is a characteristic feature of:

A. Vitamin C deficiency

B. Vitamin K deficiency

C. Hemophilia

D. Thrombocytopenia

The correct answer is C. Hemophilia.

Patients with hemophilia exhibit persistent bleeding, either spontaneous or following even slight trauma that produces the mildest of abrasions or cuts. Hemorrhage into the subcutaneous tissues, internal organs, and joints is also a common feature and may result in massive hematomas.

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An asymptomatic tooth has deep caries on occlusal surface. Radiograph shows radiopaque mass at apex of the tooth. This mass is most likely to be:

 # An asymptomatic tooth has deep caries on occlusal surface. Radiograph shows radiopaque mass at apex of the tooth. This  mass is most likely to be:

A. Cementoma

B. Condensing osteitis

C. Chronic apical periodontitis

D. Acute apical periodontitis

The correct answer is B. Condensing osteitis.

In condensing osteitis, radiographs demonstrate radiopacity which is not attached to tooth, entire root outline is visible, lamina dura intact and periodontal ligament is widened. These features differentiate it from cementoblastoma, in which the radiopacity is attached to tooth, lamina dura absent and root outline is not visible. In condensing osteitis the tooth may be vital or non-vital.

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In a leukemic patient, bleeding does not stop because:

 # In a leukemic patient, bleeding does not stop because:

A. Decreased platelet count 

B. Increased WBC count

C. Decreased calcium level

D. Decrease in coagulation level

The correct answer is A. Decreased Platelet Count

The sign and symptoms of acute leukemia result from either bone marrow suppression or infiltration

of leukemic cells into organs tissues. These changes cause anemia, thrombocytopenia and a decrease in

neutrophils. Thrombocytopenia causes spontaneous bleeding such as petechiae, ecchymoses, epistaxis,

melena. It may necessary to perform surgery on patients with platelet counts in the range of 25,000

because of the difficulty in achieving platelet levels due to circulating platelet antibodies.

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