[Dental-radical cysts, a rare aetiology of maxillary sinus opacity].

OBJECTIVE

To specify CT scan roll in diagnosis of radicullar cyst invading maxillary sinus.

METHODS

Two cases of 23 and 34-year-old men presented with facial injury and sinusitis was explored by CT scan.

RESULTS

CT scan showed in both patients a cystic lesion, developing into the maxillary sinus around a tooth apex and limits by a double dense thin rim.

CONCLUSION

CT scan permits diagnosis of radicular cyst invading maxillary sinus, in the event of obscured maxillary sinus, when double dense thin rim corresponding to the repulsed wall of the sinus is looking.