Myeloproliferatieve neoplasmata Flashcards

1
Q

CML: chronisch myeloide leukemie

A
Teveel hematopoiese (vooral myeloide proliferatie), wel normale uitrijping. Hyperproliferatie; BCR-ABL transformatie
20% overgang naar leukemie
Rond 50j
Splenomegalie.
Behandeling; imatinib
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

Klinisch beeld CML

A

Leukocytose, trombocytose en achterblijven erythropoiese; milde anemie

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

CML kent 3 fasen: clonale evolutie

A
  1. Chronische fase
  2. Acceleratie fase: teoname milt, blasten in bloed. Anemie en trombocytopenie
  3. Blasten crisis: overgang naar acute leukemie, mediane overleving 4-6 maanden

Door clonale evolutie; subclonen met weer nieuwe mutaties

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

CML chromosoom veranderingen

A

philadelphia chromosoom

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

CML behandeling

A

Imatinib, dasatinib; kinase inhibitors.

Inhiberen BCR-ABL binding pocket –> groeivoordeel kloon onderdrukken

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

Andere myeloproliferatieve ziekte

A
Polycythemia Vera (PV), 
Essentiele trombocytose (ET)
Myelofibrose (MF)

Mutatie in cytokine receptor of signaalroute (JAK2)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

Polycythemia Vera (PV)

A

Erytrocytose.(vaak ook leukocytose en trombocytose)
Meestal jak2 mutatie
Splenomegalie

Trombose risico.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

Prognose PV

A

10-16 j.

Kan overgaan in MF, kan overgaan in acute leukemie

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

Behandeling PV

A

Aderlaten, trombocytenaggregratieremmer, cytoreductie

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

Essentiele trombocytose (ET)

A

Trombocytose, 40% splenomegalie.
Erytromegalie.
Mutatie JAK2
Soms constitutionele symptomen

Bloedingen; verworven vWF
Trombose risico

Trombosenaggregratie remmers
Prognose goed; 10-20 jaar stabiel

Kan overgaan in MF en AML

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

Myelofibrose (MF)

A

primair of post EF en PV
Fibrosering vna beenmerg door megakaryocytaire cytokine productie
Extramedullaire hematopoiese: in milt, splenomegalie

vermoeidheid, vermagering, koorts, nachtzweten, botpijn, jeuk.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

MF behandeling

A

bloedtransfusie. JAK2 remmer –> ruxolitinib.

Allogene sct.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

Hoe behandel je graft versus host disease?

A

Prednison; immuunsysteem onderdrukken

How well did you know this?
1
Not at all
2
3
4
5
Perfectly