Discussion of Ranula
- A ranula is a cystic lesion resulting from obstruction of the sublingual gland duct.
- “Mucus-escape phenomenon” or the “mucus-retention phenomenon”: with partial or complete obstruction of the sublingual gland duct, the duct dilates and subsequently ruptures, allowing its secretions to leak into the surrounding soft tissue.
- Two types:
- Simple ranula: Located above the mylohyoid
- Plunging ranula: Dissects through the mylohyoid muscle
- The vast majority of manulas contain a lining composed of condensed connective tissue rather than a true epithelial lining.
 Imaging Findings for Ranula
- Cystic mass in the sublingual area.
 External Links
 References for Ranula
- SK Charnoff, and BL Carter. Plunging ranula: CT diagnosis. Radiology 1986 158: 467-468.