Q:

For each of the types of pigmented skin lesions listed on the left select the most appropriate association from the list on the right

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For each of the types of pigmented skin lesions listed on the left select the most appropriate association from the list on the right.

a. Compound pigmental naevus.

b. Lentigo maligna.

c. Nodular melanoma.


  1. Growth phase vertical only.
  2. Increase in basal layer melanocytes.
  3. Melanocytes in dermis and epidermis.
  4. Presents on soles of feet.
  5. Slow-growing flat pigmented lesion.

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The answer is C, A, E. Pigmented naevi are benign conditions in which there are increased numbers of melanocytes; the compound naevus is the commonest type in childhood. Melanocytes are in dermis and epidermis.

The lentigo maligna (Hutchinson's melanotic freckle) is essentially a malignant melanoma-in-situ. It is a slow-growing flat pigmented lesion.

Malignant melanomas have a horizontal and vertical growth phase; nodular melanoma appears to have a vertical phase with no preceding horizontal phase. Increased basal layer melanocytes are seen in a lentigo (B). A malignant melanoma which presents on the soles or palms is known as an acral lentiginous melanoma (D).

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