cancer in childhood Flashcards

1
Q

most common cancer in 0-14

A

leukaemia

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2
Q

omcogenes dominant or recessive

A

d

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3
Q

tumour suppressor genes d or r

A

r

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4
Q

brca, rb, tp53 are

A

TSG

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5
Q

what is Wilm’s tumour? Which syndrome do you need to remember?

A

nephroblastoma
Beckwith Wiedemann

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6
Q

what is interesting about wilm’s genetics

A

1/20 heritable

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7
Q

which gene most important in Wilm’s tumour

A

WT1

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8
Q

what does WT1 do

A

allows metanephric mesenchyme to differentiate into proper kidney cells

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9
Q

what do you need to be aware with in conditions like RB and Wilm’s tumour

A

even though it presents unilaterally, you have to check bilaterally

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10
Q

sign of RB

A

leukokoria (white pupil at back of eye)

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11
Q

where does RB originate

A

cone precursor cells

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12
Q

what transcription factor does RB bind to and what does that mean

A

E2F, inhibits transcription, therefore inhibits the cell cycle

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13
Q

why would you try not to use radiation with RB

A

increases chance of second cancer

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14
Q

neuroblastoma presents where

A

adrenal gland or sympathetic ganglia

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15
Q

neuroblastoma loves to metastasise where

A

liver

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16
Q

what is interesting about neuroblastoma 4S in infants

A

can spontaneously regress without any ytherapy

17
Q

key genes in neuroblastoma? what are they

A

MYCN, ALK, PHOX2B - oncogenes

18
Q

what is the strongest biomarker in neuroblastoma

A

MYC-N

19
Q

acute lymphoblastic leukaemia presents withh

A

bruising - thrombocytopaenia
pallor and fatigue - anaemia
infection - neutropenia

20
Q

what is leukaemia in children

A

expansion of immature, undifferentiated lymphoblasts

21
Q

in children, 80% of children with ALL are … and … positive

A

CD10 and CD19

22
Q

which is the most highly translocated gene known in ALL? where is it?

A

KMT2A, chromosome 11

23
Q

which is the most common translocation in ALL

A

4;11

24
Q

which muscle fibres are lost most in ageing

A

fast twitch

25
Q

dopamine is the nt of…

A

chasing

26
Q

reduction of ach in brain

A

memory decline

27
Q

reduction of monoamines

A

sleep disorders, lack of motivation

28
Q

what are monoamines

A

noradrenaline and dopaminea

29
Q

lack of serotonin

A

depression

30
Q

which are the only two hormones which go up with age

A

insulin and cortisol

31
Q

why is DM2 a risk factor for dementia

A

certain cells in the hippocampus require insulin for glucose transport

32
Q

what do sertoli cells look like

A

large, pale nucleus and nucleolus

33
Q

what tumour resembles cut potato

A

seminoma

34
Q

what are abnormal pap smear cells called and why

A

koilocytes - clear halo around the nucleus

35
Q

describe the CIN grading

A
36
Q

what is this characteristic feature of squamous cell cervical carcinoma

A

keratin pearls

37
Q

what are the equivalent of seminomas - germ cell carcinomas in female

A

dysgerminoma

38
Q

syphillis bug

A

treponema pallidum