Imaging In Laryngology

Station 1:


Describe this CT scan

What could be the probable diagnosis ?

This is axial CT scan of neck.

Mass seen arising from (marked m) parapharyngeal space. It could be seen extending to oropharynx.

Probable diagnosis - 1. Tumor involving the deep lobe of parotid gland, 2. Schwannomas

Station 2:


Comment on this CT scan.

This is a coronal CT plain of skull.

Spherical mass seen over the hard palate.
A small calcified spot seen in the center of the mass.
There is a clear plane visible between the mass and hard palate.
There is no evidence of erosion of hare palate.

Possible diagnosis:

? Ectopic salivary gland tumor

Station 3:


Comment on this CT scan of neck

Cystic swelling seen in front of trachea on the right side.
Probable diagnosis - Thyroglossal cyst
Dermoid cyst
Infected lymph node


Comment on this chest radiograph

What condition could cause this?


This is known as Steeple's sign (The tracheal air column resembles the pointed steeple of a church)

This sign is a classic feature of acute laryngotracheal bronchitis.

Lateral view neck will help us to rule out acute epiglottitis, if not excluded already clinically.

This narrowing occurs in the proximal 1 cm of trachea and may extend up to the level of true cord

Station 5:


Comment on this MRI scan

What can you do for this patient?

This is a MRI scan neck lateral view.
Tracheal stenosis could be seen just below the level of cricoid cartilage.
Tracheostomy tube in situ.
Air column adequate below the tracheostome.
Resection of the stenosed segment of the trachea with anastomosis is the treatment of choice.
Anastomosis should not be performed under tension. Tracheal lengthening procedures like laryngeal drop may be performed.

Station 6:

Read the given CT scan.

If it is a malignant lesion what could it be?


This is an axial CT scan of neck of a patient.
It shows a spherical mass occupying the lower pole of parotid gland.
The mass has a thick capsule and a radiolucent centre. Probable diagnosis parotid abscess.
Only two malignant lesions of parotid gland are known to cause cystic changes:
1. Adenoid cystic carcinoma
2. Mucoepidermoid carcinoma

Station 7:


Comment on the CT scan displayed:

Axial CT of skull at the level of maxilla.
Shows a bony swelling arising from the inner surface of the alveolar border of
left maxilla. The bony swelling is attached to the inner surface of alveolar border
of the maxilla by a small pedicle. Probable diagnosis - torus mandibularis.

Station 8:


Comment on CT scan displayed:

This is a CT scan plain neck axial view showing air filled sac in continuity with laryngeal air column.

Probable diagnosis: External laryngocele

Station 9:


Comment on the CT scan displayed.

It is a contrast CT scan of neck axial cut.
Sternomastoid muscles seen on both sides.
Thyroid not visualised.
Carotids & internal jugular veins clearly seen
On internal jugular vein appears larger.

Station 10:


Comment on the CT scan displayed.
Enumerate two differential diagnosis for the findings seen.

This is a plain axial CT taken at the level of orpharynx.
It shows unilateral enlargement of palatine tonsil.
Differential diagnosis include:
Infectious mononucleosis
Malignancy tonsil
Benign tumor of tonsil

Station 11:

Discuss the features seen in the x ray displayed.

X-ray skull lateral view.

1- Radiolucent shadow under the first lower molar teeth. Probably Dental root abscess

2- Swelling over submandibular region probably Ludwig's angina

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