Win an All-Access Pass!
Become a new yearly Curie (Radium) or Roentgen (Gold) Radiopaedia Supporter during December and be in the running to win one of four 12-month All-Access Passes. Find out more.

Sinonasal undifferentiated carcinoma

Case contributed by Dr Mohammad Taghi Niknejad


16 Y/O patient with nasal fullness

Patient Data

Age: 16
Gender: Male

There is a large sinonasal mass with invasive appearacne. Maxillary sinus and ethmoidal air cells are completely occupied by the mass at the right side and right osteomeatal unit is completely enlarged and obstructed by the mass.  Sphenoid and right frontal sinuses also are involved.  

Bone destruction is noted at the right maxillary sinus walls and nasal cavity.  Right orbit medial wall also has been involved, and the extraconal mass has mass-effect on the right medial rectus with the fat plane between the mass and the muscle intact. No evidence of intracranial extension. 

Case Discussion

Appropriate histologically investigation confirmed the diagnosis of sinonasal undifferentiated carcinoma.

Sinonasal undifferentiated carcinoma (SNUC) is a rare and highly aggressive neoplasm of the paranasal sinuses and nasal cavity which is characterized by rapid growth, a propensity for locoregional recurrence, distant metastases ( particularly to lung and bone ) , and poor prognosis.

PlayAdd to Share

Case information

rID: 22145
Published: 15th Mar 2013
Last edited: 14th Aug 2019
System: Head & Neck
Inclusion in quiz mode: Included

Updating… Please wait.

 Unable to process the form. Check for errors and try again.

 Thank you for updating your details.