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NEET MDS Quiz - Practice Test

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pathology - 3 Questions

1
Pathology

The typical ‘crew cut’ appearance seen in sickle cell anemia because of:
1. Capillary stasis — decreased blood supply to bone
2. Resorption of marrow leads to expansion of skull bone
3. Expansion of marrow leads to resorption of bone with apposition of new bone on skull
4. All of the above

๐Ÿ“ Explanation:

The expansion of the marrow space due to increased hematopoiesis can lead to resorption of the outer cortical bone and the formation of new bone, resulting in the characteristic "crew cut" appearance on X-rays. This appearance is due to the trabecular pattern of the skull becoming more prominent as the outer layer is resorbed.

2
Pathology

Sickle cell anemia is precipitated when:

1) Oxygen tension goes down
2) Increased viscosity of blood is there
3) There is dehydration
4) All of the above

๐Ÿ“ Explanation:

Sickle cell disease results from mutation, or change, of certain types of hemoglobin chains in red blood cells (the beta hemoglobin chains).

When the oxygen concentration in the blood is reduced, the red blood cell assumes the characteristic sickle shape. This causes the red blood cell to be stiff and rigid, and stops the smooth passage of the red blood cells through the narrow blood vessels.

3
Pathology

Slightly raised vesicles rupturing to form ulcers are a feature of
    1)     Rubeola
    2)     Rubella
    3)     Condyloma acuminatum
    4)     Chicken pox

๐Ÿ“ Explanation:

Chicken pox presents with multiple dermal lesions characteristically with vesicles, pustules which may secondarily ulcerate

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