In human anatomy, Prussak’s space is the small middle ear recess, bordered laterally by the flaccid part of Shrapnell’s membrane, superiorly by the scutum (a sharp bony spur that is formed by the superior wall of the external auditory canal) and lateral malleal ligament, inferiorly by the lateral process of the malleus …
Where is prussak space?
Prussak space is located between the lateral process of the malleus interiorly, pars flaccida of the tympanic membrane laterally, neck of the malleus medially and the lateral mallear ligament superiorly.
What is pars flaccida cholesteatoma?
Retraction pocket cholesteatoma with mouth at pars flaccida. Acquired cholesteatomas usually arise from focal retractions of the TM. Retraction pockets are invaginations of the TM that form in patients with chronic Eustachian tube dysfunction, negative middle ear pressure, and focal collapse of the TM.
Can an ear infection cause a cyst?
Repeated infections and/or and a tear or retraction of the eardrum can cause the skin to toughen and form an expanding sac. Cholesteatomas often devolop as cysts or pouches that shed layers of old skin, which build up inside the middle ear.
How is cholesteatoma diagnosed?
To determine whether you have a cholesteatoma, your doctor will examine the inside of your ear using an otoscope. This medical device allows your doctor to see if there are signs of a growing cyst. Specifically, they will look for a visible deposit of skin cells or a large mass of blood vessels in the ear.
What is Epitympanic recess?
The epitympanum, also known as the attic or epitympanic recess, is the most superior portion of the tympanic cavity. 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.
What does a cholesteatoma look like on a CT scan?
The hallmarks of cholesteatoma on CT are a soft tissue mass-like opacity in the middle ear cavity and mastoid antrum associated with erosion of the ossicles and pressure erosion of adjacent structures [9–14].
What does a cholesteatoma look like?
Cholesteatoma is the name given to a collection of skin cells deep in the ear that form a pearly-white greasy-looking lump deep in the ear, right up in the top of the eardrum (the tympanic membrane).
Can a CT scan detect ear problems?
CT scans use electromagnetic radiation to take a series of X-rays of the interior structures of the ear and create a computerized three-dimensional image. CT scans may reveal damage to the bony components of the ear or an abnormal bone growth in the middle ear, a condition called otosclerosis.
Where is the Prussak space?
Prussak space is located between the lateral process of the malleus interiorly, pars flaccida of the tympanic membrane laterally, neck of the malleus medially and the lateral mallear ligament superiorly.
What is Prussak space in otolaryngology?
This space is best demonstrated on the oblique coronal image. Pars flaccida cholesteatoma, acquired or congenital, typically begins in Prussak space before extending and invading the surrounding structures. It is named after Aleksandr Fedorovich Prussak (1839-1897), Russian otologist who described the detailed anatomy of the space in 1867 2-4.
What is the Prussak ventilation?
Ventilation of Prussak’s space is only possible posteriorly above the posterior malleus fold. It communicates with the posterior pouch of von Troltsch. It is named after the Russian otologist Alexander Prussak (1839-1897).
What is a cholesteatoma of the Prussak space?
Pars flaccida cholesteatoma, acquired or congenital, typically begins in Prussak space before extending and invading the surrounding structures. It is named after Aleksandr Fedorovich Prussak (1839-1897), Russian otologist who described the detailed anatomy of the space in 1867 2-4. 1. Head & neck surgery-otolaryngology.
