What is Tympanomastoid suture line?
A fissure separating the tympanic portion from the mastoid portion of the temporal bone; it transmits the auricular branch of the vagus nerve.
How do you check for facial nerve parotidectomy?
The posterior belly of digastric muscle is the most easily identifiable and a very consistent landmark for facial nerve dissection during parotidectomy. When supplemented with the tragal pointer, accuracy in identifying the facial nerve trunk is very high, thereby avoiding inadvertent injury to the nerve trunk.
What is Tragal point?
The “cartilaginous pointer” or “tragal pointer”: the anterior tip of the tragus portion of the external ear cartilage. The main trunk is reported to be 1 cm deep and inferior to the pointer.
What is Tympanomastoid?
Tympanomastoid exploration refers to a surgical procedure carried out to remove part or all of the mastoid bone as well as opening up the middle ear to be able to remove infection. Most commonly, your child will require this surgery due to a pocket of skin cells called a cholesteatoma.
What is radical parotidectomy?
Radical parotidectomy involves removal of all parotid tissue as well as sacrifice of the FN. This is done in cases where the FN has been invaded by tumor or if preoperative FN function was impaired in the presence of malignant disease.
What is a parotid Sialocele?
Parotid duct sialocele is a salivary cavity arising at the expense of parotid duct. Facial trauma is the most common cause of this rare condition. If left untreated, a sialocele may develop into a significantly large facial swelling. Fistula formation may occur, often draining extraorally.
Which nerve is involved in parotidectomy?
Preserving the facial nerve is an important priority when removing a parotid gland tumor. The facial nerve is typically identified and protected during a parotidectomy. However, there is a chance that the nerve may be adversely affected by the tumor itself or by the surgical procedure needed to remove the tumor.