Journal of the Korean Academy of Pediatric Dentistry 2011;38(1):88-94.
Published online February 28, 2011.
Hye Jin Na1, Jae-Ho Lee2, Seong-Oh Kim2, Je Seon Song2, Seung-Hye Kim2, Hyung-Jun Choi2, Byung-Jai Choi2
1Department of Pediatric Dentistry,College of Dentistry, Yonsei University
2Department of Pediatric Dentistry and Oral Science Research Center, College of Dentistry, Yonsei University 
조대술을 시행한 하마종의 치료
나혜진1, 이제호2, 김성오2, 송제선2, 김승혜2, 최형준2, 최병재2
1연세대학교 치과대학 소아치과학교실
2연세대학교 치과대학 소아치과학교실 및 구강과학연구소
Correspondence:  Byung-Jai Choi,  Tel: 02-2228-8800, Email:
Received: 20 November 2010   • Accepted: 10 January 2011
Ranula is a mucosal cyst that occurs in the mouth floor. This is a pseudo cyst caused by mucous retention within the tissue due to the rupture of catheter in the salivary gland. Ranula occurs mainly in a unilateral form and is characterized by painless bluish transparent swelling, with a increasing mass size. If the size is large, it can cause discomfort during swallowing, pronounciation, and mastication, but external swelling and infection is rare. Treatments include observation for spontaneous resolution, simple incision and drainage, marsupialization and excision. Marsupialization done by removing parts of the cyst wall and connecting it to the oral mucosa. It is a conservative procedure and recommended for children. It has advantages such as maintaining outline of oral tissue and less risk of damaging anatomic structure. Recurrence is common, mostly occurring within 4 months after surgery. This case is about a eight-year-old girl with ranula on the right mouth floor. This patient was treated with marsupialization that is one of treatment for ranula, and recurrence was not observed.
Key Words: Ranula, Recurrence, Marsupialization

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