Acral melanoma

Question 1

Parallel ridge pattern is a melanoma specific feature of acral melanoma

Answer 1

True

The features of acral melanoma are:
Parallel ridge pattern
Irregular diffuse pigmentation
Irregular fibrillar pattern
Large diameter lesion

Question 2

Parallel ridge pattern is defined as pigmentation located on the ridges of palms and soles

Answer 2

True

Question 3

Irregular diffuse pigmentation is a melanoma specific feature of acral melanoma

Answer 3

True

The features of acral melanoma are:
Parallel ridge pattern
Irregular diffuse pigmentation
Irregular fibrillar pattern
Large diameter lesion

Question 4

Irregular diffuse pigmentation is defined as irregular diffuse pigmentation with different shades of ram, brown, black and/or grey

Answer 4

True

Question 5

Irregular fibrillar pattern is a melanoma specific feature of acral melanoma

Answer 5

True

The features of acral melanoma are:
Parallel ridge pattern
Irregular diffuse pigmentation
Irregular fibrillar pattern
Large diameter lesion

Question 6

Irregular fibrillar pattern is defined as any fibrillar pattern on the palms, or fibrillar pattern on the soles that revels an increased variability in the thickness or colours of the lines. Line colour other than brown is also considered atypical

Answer 6

True

The features of acral melanoma are:
Parallel ridge pattern
Irregular diffuse pigmentation
Irregular fibrillar pattern
Large diameter lesion

Question 7

Large diameter lesion is a feature of acral melanoma

Answer 7

True

The features of acral melanoma are:
Parallel ridge pattern
Irregular diffuse pigmentation
Irregular fibrillar pattern
Large diameter lesion

Question 8

A large diameter lesion in acral melanoma is defined as newly acquired lesion greater than 7-10mm in diameter, especially in individuals over age of 50 years

Answer 8

True

The features of acral melanoma are:
Parallel ridge pattern
Irregular diffuse pigmentation
Irregular fibrillar pattern
Large diameter lesion

Question 9

The ink test in which ink is applied to the slim highlight the furrow and ridges and even the eccrine openings; assists in recognising the ridges

Answer 9

True

Question 10

In contrast to melanoma, most naevi reveal the parallel furrow pattern and lattice-like pattern

Answer 10

True

where pigment is predominantly in the furrows

Question 11

Any lesion on the palm with a fibrillar pattern should be viewed with suspicion

Answer 11

True

Question 12

The fibrillar pattern is common in melanocytic neoplasms on the soles, but the lines in melanoma have increased variability in thickness, spacing and colour

Answer 12

True

Naevi on the soles with fibrillar pattern tends to be brown in colour amd have thin and regular lines

Question 13

Parallel furrow pattern = acral naevus

Answer 13

Parallel ridge pattern = acral melanoma

Question 14

Parallel furrow pattern is results from naevomelanocytes preferably transferring pigment to keratinocytes located in the furrows (crusts limitans)

Answer 14

Parallel ridge pattern results from abundant malignant melanocytes around the rete ridges associated with the acrosyringia (crista intermedia)