Nevus and Melanoma

Question 1

Regarding congenital giant hairy Nevus most perfect answer among following is:

A. It is malpositioning of otherwise normal structure.

B. It is regional absence of normal tissue.

C. It is an aberration of tissue composition.

D. All of the above are correct.

E. None of the above is correct.

Answer 1

C

An imbalance in the relative cellular composition of tissue may lead to significant cellular malformation without alteration in global mass.

In congenital giant hairy nevus, the melanocyte related nevus cells develops excessively in dermis.

Other example is cutaneous port wine lesion, which results from excessive developmental accumulation of abnormal microvascular tissues in the dermis.

Examples of malpositioning of otherwise normal structure are dextrocardia, meningocele and diaphragmatic hernia.

The absence of regional absence of normal tissue is Amalia.

Syed/MCQ