Small and large plaque parapsoriasis Flashcards Preview

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Flashcards in Small and large plaque parapsoriasis Deck (16)
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1

Onset of parapsoriasis:

40 y/o

2

What is gender predilection for parapsoriasis?

3:1 M:F

3

Describe lesions of SPP and the classic distribution.

Scaly patches< 5cm in Bathing suit distribution.

4

Which lymphomas is Small plaque PS associated with?

- NONE!

5

A variant of SPP is _____ and presents with _____.

- digitate dermatosis
- long finger-like patches along cleavage lines on the flanks

6

How does Large PPS present clinically and what is distribution?

- scaly patches> 5cm in size in bathing suit distribution

7

What is the clinical course of SPP?

- wax and wane in course the either resolve spontaneously or with treatment after several years

8

Large PPS may progress to _____ with a risk of ____ % in ____ amount of time

- Mycosis fungicides
- 10-35% risk in 6-10 years

9

Variant of Large PPS is _____

- retiform parapsoriasis

10

Retiform parapsoriasis (variant of Large PPS) almost always does what?

- progresses to MF

11

How does retiform parapsoriasis look clinically?

- wide-spread erythematous scaly patches in a net-like distribution

12

How do you diagnose parapsoriasis?

- Biopsy

13

Biopsy of parapsoriasis will show:

- parakeratosis (corresponding to scale clinically)
- mild acanthosis and spongiosis
- mild lymphocytic infiltrate at DEJ, predominantly CD4 +
- may have T-cell clonality

14

Treatment of parapsoriasis?

- topical corticosteroids and various photo therapies

15

pathogenesis of parapsoriasis?

- idiopathic

16

What are symptoms of parapsoriasis?

- asymptomatic!