Rabdomiosarcoma Flashcards

1
Q

Sarcoma mas frecuente en pediatria

A

Rabdomiosarcoma

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2
Q

Tumores del músculo esquelético

A

Embrionario
Alveolar
Pleomorfico / Anaplasico
Esclerosante

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3
Q

Cual es el más agresivo

A

Rabdomiosarcoma Alveolar

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4
Q

Rabdomiocarcoma mas comun

A

Embrioanario

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5
Q

Rambdomiosarcoma embrionario

A

Edad 6 años <5 años
Cabeza y cuello, genital
Tracto biliar, peritoneo y pelvis
Esporadico/sindromico

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6
Q

Esporadico

A

Genetica completa
Mutacion en RAS
Mutacion en p53

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7
Q

Sindromico

A

Costello
NF1
SBW
Li fraumeni
DICER

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8
Q

Histologia de RMS embrionario

A

Celulas mesenquimatosas primitivas en varias estapas de miogenesis
Estreias musculares

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9
Q

Esclerosante/Fusocelular

A

Edad: niños-adolescentes
Parameningeo, paratesticular
Compuesto en un 80% de células fusiformes
Fusion: VGLL2 o NCOA2
Mutacion de MYOD1

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10
Q

Rabdomiosarcoma Alveolar

A

Edad 15 años
Extremidades
Cabeza y cuello (peroespinal/perineal)
Necrosis y hemorragia
t(2:13)(q36:q14)

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11
Q

Rabdomiosarcoma pleoformifico

A

Raro en pediatría

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12
Q

Dx diferencial con otras neoplasia

A

Neuroblastoma
Familia de sarcoma de Ewing
Angiosarcoma poco diferenciado
Linfoma
SArcoma sinovial
SArcoma granulocitico

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13
Q

Marcadores de IHQ

A

Miogenina
MyoD1
Actina
Actina alfa.carmerica
Desmina
Mioglobina

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14
Q

Transloccion mas frecuente de RMS alveolar

A

t(2:13)(q36:q14)

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