Items tagged “temporal_bone”

Congenital cholesteatomas are identical to epidermoid cysts, differing only in name and location.  Pathology They are intraosseous inclusions of the ectoderm and are therefore comprised of keratin debris and cholesterol. Characteristically, they are located at the petrous apex. In contrast, mi...

Middle ear effusions are frequent in children due to prominent adenoids and horizontal Eustachian tubes. These do not require imaging and can be treated expectantly / medically / surgically with tympanostomy tubes. Eustachian tube dysfunction is the accepted etiology, with resorption of air and ...

Petrous apicitis, also known as apical petrositis, is infection with involvement of bone at the very apex (petrous apex) of the petrous temporal bone. Epidemiology Petrous apicitis is less common than it once was, on account of the widespread and early use of antibiotics for acute otomastoidit...

The foramen singulare, also known as the singular foramen or singular canal, is a thin channel within the petrous temporal bone that carries the singular nerve from the internal auditory canal. It is a normal structure that may be mistaken for a temporal bone fracture (i.e., it is a pseudofractu...