218 HJ Choi, et al. • Submandibular mucocele in a 16-month-old child When the patient showed a right submandibular gland mucocle 2 months later, we removed the cystic mass with the submandibular and sublingual glands to prevent recurrence. Our case did not show recurrence following the second operation that removed the lesion and the submandibular and sublingual glands, in agreement with the previous literature3). To the best of our knowledge, this is the first case of bilateral serial submandibular gland mucocele in a young child in Korea or elsewhere. In conclusion, we describe an unusual case of bilateral serial submandibular gland mucocele in a 16-month-old female child. Submandibular mucocele is an extremely rare lesion, but should be considered in the differential diagnosis of a neck mass, even in a young child. This case was presented by poster session at the 60th annual meeting of Korean Pediatric Society, in autumn, 2010. Acknowledgment References 1. Watt J. Benign parotid swellings: a review. Proc R Soc Med 1977;70:483- 6. 2. Anastassov GE, Haiavy J, Solodnik P, Lee H, Lumerman H. Submandi- bular gland mucocele: diagnosis and management. Oral Surg Oral Med Oral Pathol Oral Radiol Endod 2000;89:159-63. 3. Ozturk K, Yaman H, Arbag H, Koroglu D, Toy H. Submandibular gland mucocele: report of two cases. Oral Surg Oral Med Oral Pathol Oral Radiol Endod 2005;100:732-5. 4. Kang EY, Cha SJ, Cha SH, Seal HY, Chung KB, Suh WH. Ultra- sonography in salivary gland disease. Korean J Radiol 1984;20:795-803. 5. Yoo MJ, Kim HS, Seok SR, Kim MG. A case of mucocele of the sub- mandibular gland. Korean J Otolaryngol-Head Neck Surg 2001;44:441- 4. 6. Surkin M, Remsen K, Lawson W, Som P, Biller HF. A mucocele of the submandibular gland. Arch Otolaryngol 1985;111:623-5. 7. Hughes WG, Houston GD, Savage MG. Slow-growing midline sub- mental mass. J Oral Maxillofac Surg 1999;57:61-5. 8. Nico MM, Park JH, Lourenco SV. Mucocele in pediatric patients: analy- sis of 36 children. Pediatr Dermatol 2008;25:308-11. 9. Work WP. Cysts and congenital lesions of the parotid gland. Otolaryngol Clin North Am 1977;10:339-43. 10. Van der Goten A, Hermans R, Smet MH, Baert AL. Submandibular gland mucocele of the extravasation type. Report of two cases. Pediatr Radiol 1995;25:366-8. 11. Standish SM, Shafer WG. The mucus retention phenomenon. J Oral Surg Anesth Hosp Dent Serv 1959;17:15-22. 12. Bhaskar SN, Bolden TE, Weinmann JP. Pathogenesis of mucoceles. J Dent Res 1956;35:863-74. 13. Davison MJ, Morton RP, McIvor NP. Plunging ranula: clinical obser- vations. Head Neck 1998;20:63-8. 14. Cholankeril JV, Scioscia PA. Post-traumatic sialoceles and mucoceles of the salivary glands. Clin Imaging 1993;17:41-5. 15. Zhao YF, Jia Y, Chen XM, Zhang WF. Clinical review of 580 ranulas. Oral Surg Oral Med Oral Pathol Oral Radiol Endod 2004;98:281-7. 16. Coit WE, Harnsberger HR, Osborn AG, Smoker WR, Stevens MH, Lufkin RB. Ranulas and their mimics: CT evaluation. Radiology 1987; 163:211-6. 17. Anavi Y, Kaplan I, Calderon S. Lateral neck mass. Oral Surg Oral Med Oral Pathol Oral Radiol Endod 2002;94:536-9. 18. Kauffman RM, Netterville JL, Burkey BB. Transoral excision of the submandibular gland: techniques and results of nine cases. Laryngoscope 2009;119:502-7.