MeSH definition : Sampling of blood levels of the adrenocorticotropic hormone (ACTH) by withdrawal of
blood from the inferior petrosal sinus. The inferior petrosal sinus arises from the
cavernous sinus and runs to the internal jugular vein. Sampling of blood at this level
is a valuable tool in the differential diagnosis of Cushing disease, Cushing syndrome,
and other adrenocortical diseases.;
Sampling of blood levels of the adrenocorticotropic hormone (ACTH) by withdrawal of
blood from the inferior petrosal sinus. The inferior petrosal sinus arises from the
cavernous sinus and runs to the internal jugular vein. Sampling of blood at this level
is a valuable tool in the differential diagnosis of Cushing disease, Cushing syndrome,
and other adrenocortical diseases.