315 - Leucémie lymphoide chronique Flashcards

1
Q

Mécanisme de la LLC

A

Prolifération lymphoide monoclonale B

MO, sang, gg

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2
Q

Fréquence LLC

Age d’apparition

A

Leucémie la plus fréq chez l adulte

Age médian 72A

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3
Q

Critères diagnostic de LLC

A

Lymphocytose >5.10^9 > 3M
Marqueur CD5 / CD23
Sd tumoral

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4
Q

Evolution naturelle de la LLC

A

1/3 même espérance de vie
Evolution très lente

Incurable

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5
Q

Paraclinique du LLC

A
NFS = thrombopénie / anémie / chromatine mure et dense
Reticulocytes aug
Immunophénotypage = CD 19/20 / 5/23
Myelogramme
EPS = Hypergamma à IgM
Coombs direct
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6
Q

Score de la LLC

A

RMH
De 0 à 5
4/5 = LLC

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7
Q

Sd tumoral dans la LLC

A

Polyadénopathie superficielle
symétrique, ferme, indolore
Hépatomégalie

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8
Q

Diagnostic différentiel de la LLC

A

Lymphoprolifératif
Lymphome non Hodgkinien
MBL

Matutes 0-1-2

  • > Zone du manteau CD23-
  • > Zone marginale
  • > Folliculaire
  • > Grand lymphocyte granuleux
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9
Q

Pronostic de la LLC

A

Classification de Binet A,B,C

Mauvais pronostic
X2 lympho en 1A
Del (17p13) et Del( 11q22)
Mutation TP53
ZAP70
CD38
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10
Q

Stade A de Binet
Définition
Fréquence
Evolution

A

Moins de 3 aires gg
frq : 70%
Evo : 50% en A
50% en B ou C

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11
Q

Stade B de Binet
Définition
Fréquence
Evolution

A

Plus de 3 aires gg
frq : 20%
Evo : DC en 10A

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12
Q

Stade C de Binet
Définition
Fréquence
Evolution

A

Hb < 100
Plq < 100

frq : 10%
Evo : DC en 10A

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13
Q

Complications des LLC

A
Infection
Insuffisance médullaire
Lymphome de haut grade
Cancer secondaire
Anémie hémolytique
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14
Q

Sd de Richter

A

Lymphome de haut grade
Début de LLC

Aug rapide du syndrome tumoral
Aggravation signes généraux
Aug LDH

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15
Q

Bilan pré thérapeutique de la LLC

A
Bilan rénal
Scanner
Coombs
Serologie VHB, VHC
Cytogénétique
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16
Q

Traitement de première ligne de la LLC

A

Agents alkylants
Analogue purine
Ac monoclonaux