Neck

Question 1

Lemierre syndrome

Answer 1

AKA Postpharyngitis Venous Thrombosis

pharyngitis + neck vein thrombosis + septic pulm emboli

Enlargement, thrombosis, and mural enhancement of the affected veins

venous thrombophlebitis of the tonsilar and peritonsillar veins. Spreads to IJ.

Question 2

Bezold abscess

Answer 2

results from complication of otomastoiditis leading to necrosis of mastoid tip and spread of infection into the surrounding soft tissue.

IJ thrombosis is a complication

Question 3

Ranula

Answer 3

mucous retention cyst that arises from the sublingual gland.

ddx is dermoid/epidermoid but these tend to be more central

Question 4

dermoid/epidermoid

Answer 4

dermoid > or 2 germ layers. epidermoid only ectoderm.

fluid attentuation lesion in floor of mouth.

sack of marbles appearance /fat => dermoid

Question 5

thyroglossal duct cyst

Answer 5

cystic lesion usually midline of neck.

Question 6

1st branchial cleft cyst

2nd branchial cleft cyst

Answer 6

1. near parotid or external ear canal

2. near angle of mandible, submandibular gland, infront of SCM muscle

Question 7

Sinonasal ossifying fibroma

Answer 7

well circumscribed, expansile
soft tissue density center with calcified rim. fibrous center may enhance

T1 dark calc portion, intermediate fibrous portion
T2 dark calc portion, bright fibrous portion
C+ heterogenous enhancement of fibrous portion