Plunging ranulas treated with ultrasound-guided injection of OK-432: Case of three cases

Sclerotherapy with OK-432 injection has been recommended as the treatment of choice for plunging ranula because of its safety and minimal complications. However, the recurrence rate after sclerotherapy with OK-432 is variable and has been reported as 0–50%, and some reports have preferred surgical treatment despite the greater risk of potential complications. This article presents three cases of plunging ranula treated with ultrasound-guided injection of OK-432, resulting in successful regressions without major complications or recurrences. Ultrasound-guided intervention might increase the success ratio for sclerotherapy, despite the low number of patients for which it was effective in this study.