The hypoplastic inferior petrosal
sinus: a potential source of false-negative results in petrosal
sampling for Cushing's disease.
The parasympathetic division of cranial nerve VII supplies fibers that contribute to the greater petrosal
nerve (which supplies the lacrimal gland), the lesser petrosal
nerve (which supplies the parotid gland), and the chorda tympani (which supplies the submandibular and sublingual glands).
Bilateral Inferior Petrosal
Sinus Sampling in the Differential Diagnosis of Adrenocorticotropin-Dependent Cushing's Syndrome: A Comparison with Other Diagnostic Tests.
Meng and Fox (1995) reported on the inner ear of isolated petrosals
from the Late Cretaceous of Montana belonging potentially to basal metatherians.
Routine inferior petrosal
sinus sampling in the differential diagnosis of adrenocorticotropin (ACTH)-dependent Cushing's syndrome: early recognition of the occult ectopic ACTH syndrome.
When present the foramen petrosum transmits the lesser petrosal
Subsequent bilateral inferior petrosal
sinus sample (BIPSS) was performed for the localization diagnosis [Figure 1]d, which demonstrated adrenocorticotrophic hormone (ACTH) level of inferior petrosal
sinus and femoral vein at 0 min were 691.4 ng/L and 162.9 ng/L, at 5 min were 952.2 ng/L and 172.3 ng/L, respectively; GH level of inferior petrosal
sinus and femoral vein at 0 min were 6.34 ng/ml and 3.88 ng/ml, at 5 min were 3.7 ng/ml and 2.38 ng/ml, respectively.
It is surrounded by various clinically significant structures, including the cochlea, middle ear, eustachian tube, gasserian ganglion, geniculate ganglion, greater superficial petrosal
nerve, and jugular fossa.
It is accepted as the first landmark at combine petrosal
approaches for the cranial basis, and as the respectable landmark for the duramater of posterior fossa lying under it (Day & Tschabitscher; Mwachaka et al.; Sripairojkul & Adultrakoon; Tubbs et al., 2009).
This subgroup also included intratympanic, attic, and hypotympanic meningiomas and those of the geniculate ganglion, the sulci of the greater and lesser petrosal
nerves, the jugular foramen, the internal acoustic meatus, the mastoid process, and the petrous bone.