Masse de l'appareil locomoteur Flashcards

1
Q

localisation les plus fréquentes d’ostéosarcome?

A
#1 fémur distal
#2 tibia prox
#3 humérus
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2
Q

trouvailles radiologiques suggérant un ostéosarcome?

A

bone destruction with a wide zone of transition,
an aggressive periosteal reaction with a soft-tissue mass
as well as
a fracture at the site of the tumour in cases with pathological fractures

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3
Q

utilité de l’IRM pour ostéosarcome?

A

local staging

*également utile pour bilan pré-op

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4
Q

comment confirmer le dx d’un ostéosarcome?

A

bx par CT guidée

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5
Q

conduite suite au dx ostéosarcome?

A

chimiotx néoadjuvante

suivie d’une chx (en préservant le membre)

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6
Q

red flags d’une lésion osseuse?

A

dlr MSK persistante
dlr localisée
fx spontanée (pathologique)
enlarging mass / soft tissue swelling

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7
Q

élément radiologique suggestif de lésion osseuse?

A

lyse, lucent, sclerotic bone
involvement of cortrex, medulla, soft tissue
radiolucent, radiopaque, matrice calcifiée
réaction périostée
perméative margins
fx patho
soft tissue swelling

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8
Q

ddx tumeur active bénigne des os?

A
bone forming:
osteoid osteoma
fibrous cortical defect
oestochodroma
Enchondroma

lésion kystique:
unicameral “ solitary bone cyst

benign agressive bone tumour:
giant cel tumours / aneuvrysmal bone cyst / osteoblastoma

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9
Q

ddx tumeur maligne osseuse?

A
ostéosarcome
chondromsarcome
Ewing's sarcome
MM
méta osseuse (sein ou prostate #1; thyroide, poumon, rein, mélanome)
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10
Q

[…] désigne l’ensemble des tumeurs musculaires lisses malignes (utérus, tube digestif)?

A

Léiomyosarcome

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11
Q

Nodule constitué d’adipocytes
indolores mou mobilisable
peau M
origine bénin?

A

lipome

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12
Q

granulomes avec centre nécrotique
sans tissu s/c ou sous périosté
associés à PAR
indolore?

A

nodule rhumatoïde

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13
Q

agrégats de cristaux d’urate monosodique
bosse blanchâtre ou jaunâtre sous la peau et dans l’articulation
associée àla goutte?

A

Tophi

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14
Q

hx d’a/c, trauma ou chx
masse fluctuante
ecchymose?

A

hématome

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