Cushing. Flashcards

1
Q

Sx Cushing. Def

A

Exceso de glucocorticoides por produccion suprarrenal exagerada o tx con corticoides a largo plazo.

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2
Q

Enf Cushing. Def.

A

Produccion excesiva de ACTH por la hipofisis

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3
Q

Cushing. Etiologia mas comun

A

Forma iatrogenica (Sx Cushing)

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4
Q

Cushing. Clinica.

A

Obesidad central (caracteristica mas comun), HAS cara redonda (facies luna llena), extremidades delgadas, giba de bufalo, hirsutismo, irregularidades menstruales, hipogonadismo, fragilidad cutanea equimosis, estria violaceas, actne, cicatrizacion precaria, pletora facial, hiperpigmentacion, psicosis, paranoia, osteoporosis, nefrolitiasis, perdidad de masa muscular con miopatia muscular proximal

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5
Q

Cushing. Complicaciones

A

Sx metabolico

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6
Q

Cushing. Clinica mas importante en niños y adolescentes

A

Obesidad, Retraso en el crecimiento y el inicio de la pubertad.

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7
Q

Cushing. Dx.

A

Tamizaje inicial con supresion nocturna con dexametasona (<5umg excluye)
Medicion seriada de cortisol y crea urinaria en 24 hrs (>300umg indica SC)

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8
Q

Cushing. Dx. Se utiliza para distinguir la enf Cushing de la produccion ectopica de ACTH

A

Muestreo bilateral de sangre de los senos petrosis inferiores con cuantificacion de ACTH

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9
Q

Cushing. Lab

A

Hipokalemia, hipocloremia, alcalosis metabolica, hiperglucemia, hipercolesterolemia.

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10
Q

Cushing. Sospecha de SC suprarrenal. Dx

A

TAC o RM

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11
Q

Cushing. Sospecha de etiologia hipofisiaria

A

RM hipofisiaria con gadolinio

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12
Q

Cushing. Sospecha de produccion ectopica de ACTH

A

Investigar neoplasias relacionadas.

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13
Q

Cushing. Tx Adenoma pituitario.

A

Adultos.Microadenomectomia transesfenoidal, RT
Niños. RT hipofisiaria
RT estereotactica (menor irradiacion neuronal)
Adrenalectomia bilateral total (fracaso en anteriores)

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14
Q

Cushing. Tx. Neoplasia suprarrenal.

A

Reseccion glandula afectada, remplazo corticoides por 9-12 meses

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15
Q

Cushing. Tx. Hiperplasia suprarrenalmicronodular o macronodular bilateral.

A

Adrenalectomia bilateral total

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16
Q

Cushing. Tx. Produccion ectopica de ACTH

A

Reseccion de la neoplasia
Control del exceso de cortisol (ketoconazol, metirapona, aminoglutetimida, mifepristona, mitotano)
Y del efecto mineralocorticoide del cortisol espinorolactona.

17
Q

Cushing. Complicacion de Adrenalectomia bilateral total

A

Sx Nelson.

Tumor hipofisiario localcmente agresivo con secresion muy aumentada de ACTH, pigmentacion cutanea.

18
Q

Cushing. Causas de SC. Etiologia suprarrenal

A

ACTH disminuida o indetectable

Ausencia de Supresion con dexametasona

19
Q

Cushing. Causas de SC. Produccon ectopica de ACTH

A

ACTH normal o aumentada

Ausencia de Supresion con dexametasona

20
Q

Cushing. Causas de SC. Enf de Cushing

A

ACTH normal o aumentada

Supresion parcial con dexametasona