hypotympanum

hypotympanum

 [hi″po-tim´pah-num]
the lower part of the cavity of the middle ear, in the temporal bone.
Miller-Keane Encyclopedia and Dictionary of Medicine, Nursing, and Allied Health, Seventh Edition. © 2003 by Saunders, an imprint of Elsevier, Inc. All rights reserved.

hy·po·tym·pa·num

(hī'pō-tim'pă-nŭm),
The lower part of the tympanic cavity. It is separated by a bony wall from the jugular bulb.
Farlex Partner Medical Dictionary © Farlex 2012

hy·po·tym·pa·num

(hī'pō-tim'pă-nŭm)
The lower part of the tympanic cavity.
Medical Dictionary for the Health Professions and Nursing © Farlex 2012
References in periodicals archive ?
The tympanoplasty reconstructs a middle ear comprising only of the tube and the hypotympanum with sound protection for the round window.
The other causes of CRI in our study included electrode array extrusion (3 ears) and electrode array malposition (3 ears, 2 in hypotympanum and 1 in Eustachian tube) as shown in Figure 2.
However, larger lesions that extend into the protympanum or hypotympanum may require a postauricular approach.
Caption: FIGURE 1: 2008 high-resolution multidetector computed tomography (MDCT) (axial views) showing nonosteolytic nodular tissue mass in the hypotympanum alongside the promontory.
Another important aspect in achieving optimum coupling is the fixation at the distal end of the FMT in the hypotympanum. In the first 7 cases of our series, only fascia was used for this purpose.
Extensive bony destruction in the region of the jugular foramen extending intracranially and into the hypotympanum of the left middle ear was noted (Fig.
The anterior lesion of the hypotympanum outside the carotid canal had the highest local infiltration of the tumor, and bone erosion suggested that this was the primary site.
* Subsites: (a) Mesotympanum, (b) Protympanum, (c) Hypotympanum, (d) Retrotympanum, (e) Antrum and (f) Mastoid.
Intraoperatively, a tumor was found to occupy the entire epitympanum and mesotympanum with extension into the hypotympanum. The mass had encased the entire ossicular chain.
Computed tomography (CT) of temporal bone with 1 mm slice thickness showed a soft tissue mass in the right external auditory canal with bony remodeling, soft tissue in the mesotympanum, hypotympanum, and middle ear cavity extending into Prussak's space and minimal erosion of the scutum.
The jugular bulb normally lies below the floor of the hypotympanum of the middle ear.