Attic Ct Anatomy

Clinical and radiologic points of view.

Attic ct anatomy.

The antrum and mastoid air cells. Mesotympanum directly medial to the membrane. An mri depicts a mass in the mastoid abutting the dura. Inflammation of the middle ear cleft is a disease of great interest from both clinical and radiologic points of view.

The dura was intact. The epitympanum or attic is the upper portion of the tympanic cavity above the tympanic membrane and contains the head of the malleus and the body of the incus. The anatomy of the temporal bone at this level was examined by studying microdissections of 250 fresh temporal bones and reviewing over 1 000 high resolution computed tomography ct scans of the temporal bones. The attic floor tympanic diaphragm the tympanic isthmus and the aditus ad antrum play important roles in inflammatory processes of the middle ear cleft.

The tympanic cavity is subdivided into several parts defined in relation to the planes of the tympanic membrane. Ct scan of head and neck. Ct scan of head and neck. It is that portion of the tympanic cavity superior to the axial plane between the tip of the scutum and the tympanic segment of the facial nerve 1 3.

The new erosive changes are consistent with recurrent cholesteatoma with associated complications. Radiological anatomy of the head and neck on a ct in axial coronal and sagittal sections and on a 3d images. The tympanic membrane the malleus incus and stapes transfer soundwaves to the stapes footplate which is attached to the base of the cochlea in the oval window. Anatomy of the head and neck ct scan ct scan of head and neck.

Some authors define three compartments 4. Ct scan of head and neck. As compared to the prior postoperative study the current coronal noncontrast ct image of the left temporal bone demonstrates increased soft tissue opacification of the attic and mastoid antrum increased erosion of the scutum red circle and new defects in the lateral semicircular canal curved arrow and tegmen tympani straight arrow. Ct shows a rounded mass arrow in the attico antrotomy with erosion of the tegmen tympani.

Hypotympanum inferior to the membrane. The anatomy of the temporal bone at this level was examined by studying microdissections of 250 fresh temporal bones and. Epitympanum attic epitympanic recess superior to the membrane. The aditus to mastoid antrum otomastoid foramen or entrance or aperture to the mastoid antrum is a large irregular cavity that leads backward from the epitympanic recess into a considerable air space named the tympanic or mastoid antrum.

Posteriorly the epitympanum is in direct continuity with the mastoid antrum via the aditus ad antrum and thence the mastoid air cells. The antrum communicates behind and below with the mastoid air cells which vary considerably in number size and form. The epitympanum also known as the attic or epitympanic recess is the most superior portion of the tympanic cavity. The defect was closed with a flap of temoral muscle and a chain recontruction was done.