Chance finding of large 11 x 6 mm well defined multilocular lucency in the midline upper pharynx posterior adenoidal region in M 20 years of age. Developmental unilocular Tornwald mucous cysts are uncommon in this region seen in 0.06% of CTs and MRIs of this region.
However, they are unilocular and this lesion is multilocular and so the differential diagnosis includes
- nasopharyngeal carcinoma (NPC)
- up to 12% NPC’s are midline
- minor salivary gland tumours
- neurenteric cysts
The patient and their MD should be informed for an ENT follow up examination.
By Dr Douglas K Benn DDS PhD
Oral and Maxillofacial Radiologist