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Plunging ranula intruding into the parapharyngeal space treated with OK-432
Makoto Kinoshita1, Wataru Kida, Haruka Nakahara
1Department of Otolaryngology, National Hospital Organization Disaster Medical Center, Tokyo, Japan. kinoshitam-zao@umin.ac.jp
Abstract:
We report a very rare case of a plunging ranula extending into the parapharyngeal space, which was treated successfully with OK-432. A 27-year-old woman presented with a 4-month history of right submandibular swelling. Based on computed tomography and magnetic resonance imaging findings, we established a diagnosis of plunging ranula intruding into the parapharyngeal space. The patient was treated with an intracystic OK-432 injection that was administered under ultrasonographic guidance. At 6 weeks after the injection, computed tomography showed complete disappearance of the cystic mass. No recurrence was noted during the 10-month follow-up.
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