Oral Cavity Cancers And Salivary Glands Flashcards
What are the components of the oral cavity?
The oral cavity consists of: Lips, Floor of Mouth, Oral Tongue (anterior tongue), Buccal Mucosa, Gingiva, Hard Palate, Retromolar Trigone.
What is the first component of the oral cavity?
Lips
What is the second component of the oral cavity?
Floor of Mouth
What is the third component of the oral cavity?
Oral Tongue (anterior tongue)
What is the fourth component of the oral cavity?
Buccal Mucosa
What is the fifth component of the oral cavity?
Gingiva
What is the sixth component of the oral cavity?
Hard Palate
What is the seventh component of the oral cavity?
Retromolar Trigone
What is the anatomical definition of the oral cavity?
The oral cavity extends from the skin-vermilion junction of the lip to the posterior border of the hard palate superiorly and to the circumvallate papillae inferiorly.
What does ‘parotid’ mean?
‘Parotid’ means around the ear.
What is the size and location of the parotid gland?
The parotid gland is 2.5cm inferior and 2.5cm anterior to the external auditory meatus (EAM).
What is the role of salivary glands?
Salivary glands play a role in digestion and protection.
Where is the parotid gland located?
The parotid gland is the largest salivary gland and is located partly behind the ramus, covering the masseter muscle.
What is the nature of tumors in the parotid gland?
The majority of tumors in the parotid gland are benign.
What is the occurrence of malignancies in salivary glands?
The majority of malignancies of salivary glands occur in the parotid gland.
What is a common clinical presentation of salivary gland issues?
Asymptomatic parotid mass lasting 4 to 8 months.
What is a characteristic feature of salivary gland conditions?
Extensive lymphatic capillary plexus.
How do salivary gland masses typically grow?
Rapidly growing.
What neurological involvement can occur with salivary gland issues?
Facial cranial nerve involvement - causing paralysis.
What are some symptoms associated with salivary gland conditions?
Localized swelling of face, pain, facial palsy.
What is a common treatment for salivary gland issues?
Surgery.
What additional treatment may be needed postoperatively?
Radiation for residual, recurrent, or inoperable lesions.
What technique is used for delivering treatment to salivary glands?
Treatment is delivered by wedged field technique, using superior and inferior oblique combination, and opposed lateral field if the target extends beyond midline.
What types of energy are used in salivary glands treatment?
Dual energy: Electrons and Photons.
What is the dose for complete resection in salivary glands treatment?
60 to 65 Gy.
What is the dose for incomplete resection in salivary glands treatment?
70 to 75 Gy.
What does the target volume include in salivary glands treatment?
The target volume will include local invasion and lymphatics involved.
What is the primary objective of head and neck IMRT regarding organs at risk?
Preservation of salivary function by sparing at least one parotid gland.
What is the superior treatment border for salivary glands radiation?
Zygomatic arch or higher.
What is the anterior treatment border for salivary glands radiation?
Anterior edge of the masseter muscle.
What is the inferior treatment border for salivary glands radiation?
Thyroid notch.
What is the posterior treatment border for salivary glands radiation?
Just behind mastoid.
