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HealthCert Education > Revised pattern analysis > Flashcards

Revised pattern analysis Flashcards

1
Q

Primary pattern of lines reticular or branched: Ddx

A

Melanocytic

B keratinocytic

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2
Q

Primary pattern of lines reticular + asymmetry + clue or exception =

A

melanoma

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3
Q

One pattern (reticular, curved, structure-less) + one colour brown + abrupt border

A

Solar lentigo

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4
Q

Melanotic maculates of lip may have …… pattern

A

Reticular

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5
Q

Melanotic macule of nail matrix and genitalia are expected to have ……. or ……. pattern

A

lines curved or structureless

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6
Q

SK with asymmetry, grey colour, thick lines reticular, peripheral black dots/ clods, segmental radial lines require ……. for diagnosis of SK

A

Multiple criteria of SK including multiple orange and white clods, thick curved lines, abrupt border over total periphery.

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7
Q

Peripheral reticular lines combined with paler central structureless +/- white lines is consistent with …

A

DF

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8
Q

Pattern associated with accessory nipple

A

Peirpheral reticular lines with central structureless area

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9
Q

Primary pattern of lines angulated: Ddx

A

Melanocytic
Benign keratinocytic
BCC

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10
Q

One pattern of angulated lines + chaos colour or angulated lines combined asymmetrically with another pattern should be

A

excised on suspicion of melanoma

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11
Q

Are angulated lines seen in BCC

A

Rarely

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12
Q

Which benign lesions may have clue of angulated lines

A

Pigmented AK
SL
SK

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13
Q

Primary pattern of lines radial Ddx

A

Melanocytic
BCC
SCC
DF

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14
Q

If pseudopods occur together with lines radial then …

A

Radial lines take priority.

Pseudopods become a clue.

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15
Q

In order for radial lines to constitute a pattern they need to be ..

A

circumferential

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16
Q

Central structureless brown black or grey or dark clods with pattern of radial lines =

A

reed nevus or recurrent nevus

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17
Q

Radial lines converging to a central point within lesions is ….

A

highly specific for BCC

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18
Q

In pigmented SCC radial lines are usually composed of ….

A

dots in linear arrangement.

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19
Q

Stable symmetrical lesions with pattern of radial lines surrounding structureless pale centre will be ..

A

dermatofibroma

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20
Q

Primary pattern of lines curved Ddx

A

Melanocytic

Benign keratinocytic

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21
Q

One pattern, lines curved + one colour, brown can be …

A

Nevus
SL
SK

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22
Q

> 1 pattern, including lines curved + one colour, brown can be …

A

Melanoma
Nevus
SL
SK

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23
Q

> 1 pattern, including lines curved, suspect melanoma when ….

A

other colours of melanin are present.

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24
Q

Curved lines, melanoma expect ….

A

Dermatoscopic chaos inc chaos of border abruptness

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25
Q

Curved lines, Nevus expect

A

Gradual border over total periphery. Biological symmetry.

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26
Q

Curved lines, solar lentigo expect ..

A

flat, uniform abrupt scalloped border.

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27
Q

Curved lines, SK expect

A

raised + uniformly abrupt border + additional clues to SK

28
Q

Melanotic macule on lip is likely to be …

A

one pattern, lines curved, or structureless, small, well circumscribed, may contain some grey colour.

29
Q

Melanotic macules on the labia are likely to be …

A

large and poorly circumscribed, mandating biopsy.

30
Q

Pattern of pseudopods

A

Melanoma or Reed (Rarely Spitz) nevus

31
Q

Primary pattern of circles Ddx

A

Melanocytic
Benign keratinocytic
SCC
DF

32
Q

Ddx pigmented grey circles head and neck

A

Melanoma.
Pigmented SCC in situ
Pigmented AK
LPLK

33
Q

Can nevus have pattern of circles

A

not expected

34
Q

Pattern of circles in SK can be caused by …

A

pigment in follicular epithelium OR

basal hyperpigmentation in presence of acanthosis

35
Q

Circles in SK are …..

A

not associated with follicles and are usually distorted

36
Q

Circles in pigmented SCC may be present and are ….

A

in a linear arrangement

37
Q

reticular and curved lines take …… over circles

A

priority

38
Q

Pattern of white circles in flat lesion on head or neck is clue to …

A

AK or

SCC in situ

39
Q

Pattern of white circles in flat lesion on head or neck combined with grey dots is clue to …

A

Pigmented AK
or
Pigmented SCC in situ

40
Q

Pattern of grey dots in p AK and SCC in situ

A

Distributed symmetrically, or surrounding hair follicles.

41
Q

Primary pattern of clods Ddx

A 
Melanocytic
Benign keratanocytic
BCC
Angioma
Dermatofibroma.
42
Q

A lesion with one patter, clods, and one colour is assessed according to ….

A

colour of clods

43
Q

A lesion with one pattern, clods, and > one colour is assessed according to …

A

symmetry and specific clues.

44
Q

Pattern of clods, melanoma …

A

> 1 colour, dominant pigment melanin, asymmetry of colour, clue to melanoma
OR
combined asymmetrically with dot or structureless pattern + clue

45
Q

Pattern of brown clods confident predictor of …

A

nevus likely congenital or Spitz

46
Q

Pattern of ski coloured clods

A

congenital nevus or SK

47
Q

One pattern clods, symmetrical, > 1 colour, dominant pigment is colour of melanin is predicted to be …

A

nevus, congenital or Spitz

48
Q

Primary pattern of clods, other pattern limited to dots and structureless expected to be …

A

congenital spitz or reed nevus

49
Q

Primary pattern of clods, combined asymmetrically with another pattern, melanin is dominant pigment, > 1 colour present : Ddx

A

Melanoma.
BCC
SK

50
Q

One pattern, clods and one colour + orange clods and sharply demarcated border

A

SK

51
Q

One pattern, clods which are yellow, white or skin coloured Ddx

A

SK

Congenital nevus

52
Q

One pattern, clods distributed asymmetrically, pigmented with colour of melanin, more than one colour, no clues

A

SK

53
Q

> 1 pattern, primary pattern clods, asymmetrical, clods yellow or white predicts

A

SK

54
Q

One pattern, clods and one colour blue =

A

BCC

55
Q

One pattern, clods and one colour orange without sharply demarcated border

A

BCC, orange clods dt ulceration

56
Q

> 1 pattern, primary pattern clods, asymmetrical, clods are orange. Ddx

A

BCC or SK, sorted by specific clues.

57
Q

Primary pattern of dots ddx

A

Any of major 5 categories

58
Q

Pattern of dots sorted on basis of …

A

colour

59
Q

Grey dots ddx

A

LPLK
Pigmented AK
Pigmented Bowen’s
Melanoma

60
Q

Brown dots ddx

A

Pigmented bowen’s

Clark nevus

61
Q

Grey dots + structureless Ddx

A 
LPLK
Pigmented Ak
Pigmented Bowen's
Melanoma
BCC
62
Q

Brown dots + structureless Ddx

A

Pigmented Bowen’s
Clark nevus
Solar lentigo
Congenital nevus

63
Q

Blue dots likely

A

BCC

64
Q

Black dots ddx

A

Melanoma is some peripheral

Clark nevus

65
Q

Structureless pattern, Ddx

A 
Melanocytic
Benign keratinocytic
BCC
SCC 
DF
Other

HealthCert Education (24 decks)

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