The hypoplastic inferior
petrosal sinus: a potential source of false-negative results in
petrosal sampling for Cushing's disease.
The efferent are basilar plexus end inferior
petrosal sinus.
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 nerve.
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.
Results: Petroclival region can be accessed through following approaches:
petrosal, anterior and posterior combined approach, supra and infratentorial combined presigmoid approach, orbito-zigomatic infratemporal approach, suprameatal intradural retrosigmoid approach, pterional approach, retromastoid approach, subtemporal approach and combined subtemporal retromastoid approach:
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.
