Heak & Neck Flashcards
Which space in the neck mostly contains fat and is the space used to determine the originating space for surrounding pathologies?
Parapharyngeal space
What is the M/C benign salivary gland tumor in adults?
Pleomorphic adenoma (aka. benign mixed tumor)
What is the M/C location for squamous cell carcinoma in the neck?
nasopharynx
What is the M/C pathology in the masticator space?
Infection
Masticator space masses all have a risk of spreading, how?
Perineural tumor spread along the mandibular division of the CNV into the middle cranial fossa (through foramen ovale).
What is the M/C benign tumor of the masticator space?
Nerve sheath tumor (neurofibroma or schwannoma)
What is the M/C malignant tumor of the mandible?
Mets»_space;> primary tumor
What the M/C primary tumor to met to the mandible?
Adenocarcinoma from breast
What is the M/C type of TMJ meniscal dislocation?
Anterior dislocation
What is the rule of 80s with parotid gland tumors?
80% benign
80% pleomorphic adenomas
80% superficial lobe
80% remain benign even if untreated
What is the 2nd M/C benign tumor of parotid gland?
Warthin’s tumor
What is the M/C salivary gland tumor in children?
Hemangioma
What should you be concerned about when there is a parotid mass & CNVII paralysis?
Malignancy
What is the M/C malignant lesion of the parotid gland?
Mucoepidermoid carcinoma
What is the M/C benign condition to affect the salivary glands?
Calculous disease
What are the contents of the carotid space?
- Carotid artery
- Internal jugular vein
- CN 9-12
- Lymph nodes
What are the 2 M/C lesions of the carotid space?
i) Schwannoma
ii) Glomus tumor (@ carotid bulb)
What is the 3rd M/C lesion of the carotid space?
Lymphadenopathy (via squamous cell carcinoma)
What is the M/C retropharyngeal malignancy?
Lymphadenopathy (from nasopharyngeal or oropharyngeal abnormalities)
What is the M/C odontogenic tumor of the mandible? What is the 2nd M/C?
1st = odontoma 2nd = ameloblastoma
What is the M/C malignant tumor of the oral cavity (and which anatomy does it occur in)?
What is the M/C benign tumor of the oral cavity?
Malignant = squamous cell carcinoma (90% tongue) Benign = hemangioma
What are the associated findings seen with Gorlin’s syndrome?
a. Proliferative falcine calcificaiton
b. Multiple basal cell carcinomas of skin
c. Scoliosis
d. Ribbon-shaped ribs
e. CNS tumors
f. Keratocysts of mandible
g. Agenesis of corpus callosum
What does SAPHO stand for?
S = synovitis A = acne P = palmoplantar pustulosis H = hyperostosis O = osteitis
What is the M/C location for fx of the mandible?
Body
What is the 1st & 2nd M/C mandibular cyst?
1st = Periapical/radicular cyst 2nd = Dentigerous cyst
What is the M/C congenital neck cyst?
Thyroglossal duct cyst (70%)
What are some cystic lesions in the neck?
- Thyroglossal duct cyst (midline)
- Branchial cleft cyst (parasagittal)
- cystic hygroma (painless, neonate)
- parathyroid/thyroid cyst
- thymic cyst
What is the M/C congenital lesion of the orbit?
Dermoids
What is the M/C primary malignant orbital tumor of childhood? What is the 2nd?
1st = Retinoblastoma (intraocular) 2nd = Orbital rhabdomyosarcoma
What is the M/C benign orbital neoplasm?
Cavernous hemangioma
What is the M/C/C of unilateral/bilateral proptosis in adults?
Grave’s disease (hyperthyroidism)
What is the M/C/C of an orbital mass lesion in adult?
Orbit pseudotumor (enlargement of extraocular mm; sclera thickening)
What is the M/C malignant tumor of the external auditory canal?
Squamous cell carcinoma
