| Author | Affiliation |
|---|---|
| Ili Margalit, MD | Schneider Children’s Medical Center of Israel, Department of Pediatric Emergency Medicine, Petah Tikva, Israel |
| Ron Berant, MD | Schneider Children’s Medical Center of Israel, Department of Pediatric Emergency Medicine, Petah Tikva, Israel |
ABSTRACT
In the following vignette we demonstrate the use of point-of-care ultrasound to diagnose a simple ranula.
CASE
An 11-year-old previously healthy girl presented to the emergency department (ED) with three weeks of a rapidly progressive swelling underneath her tongue, causing difficulty in talking and eating. Physical examination revealed a 4.5 × 3 cm sublingual mass arising from the base of the tongue, around the midline (Figure 1). The mass was soft, movable and non-tender. The contents had a bluish hue, which was covered with normal appearing mucosa. A point-of-care ultrasound (POCUS) revealed a well-circumscribed homogenous cystic mass, separated from the muscular fibers of the tongue, without extravasation towards the neck (Figure 2) and without intra-cystic flow. A diagnosis of simple ranula was made.
DISCUSSION
A ranula is a pseudocyst that is formed after oral trauma or inflammation, causing extravasation of mucous from the sublingual salivary gland or from the main salivary duct. A simple ranula is restricted to the oral cavity floor. A plunging ranula extravasates through the mylohyoid muscle, towards the cervical structures in the submandibular space.1 The differential diagnosis includes dermoid and epidermoid cysts as well as rarer conditions.2 Ultrasonography is a useful imaging method for the sublingual space, particularly for simple ranulas, as it is unaffected by dental amalgam and can locate the lesion.3 Furthermore, ultrasonography has been suggested as a key component in the management of floor-of-the-mouth masses in children.4 The now-accepted treatment of simple ranulas in pediatric patients consists of a six-month period of observation before considering other treatments.1 In this case, a POCUS was consistent with the clinical diagnosis, reassured the parents and prevented an additional medical visit as the entire management took place in the ED. The follow-up visit at the otorhinolaryngology clinic was scheduled for a few months later; by that time the ranula had completely resolved.
Footnotes
Section Editor: Rick A. McPheeters, DO
Full text available through open access at http://escholarship.org/uc/uciem_westjem
Address for Correspondence: Ron Berant, MD, Schneider Children’s Medical Center of Israel, Department of Pediatric Emergency Medicine, 14 Kaplan St. Petah Tikva, 4920235 Israel. Email: ron.berant@gmail.com. 11 / 2016; 17:827 – 828
Submission history: Revision received May 15, 2016; Submitted September 2, 2016; Accepted September 14, 2016
Conflicts of Interest: By the WestJEM article submission agreement, all authors are required to disclose all affiliations, funding sources and financial or management relationships that could be perceived as potential sources of bias. The authors disclosed none.
REFERENCES
1. Zhi K, Gao L, Ren W. What is new in management of pediatric ranula?. Curr Opin Otolaryngol Head Neck Surg. 2014;22(6):525-9.
2. La’porte SJ, Juttla JK, Lingam RK. Imaging the floor of the mouth and the sublingual space. Radiographics. ;31(5):1215-30.
3. Jain P. High-resolution sonography of sublingual space. J Med Imaging Radiat Oncol. 2008;52(2):101-8.
4. Schwanke TW, Oomen KPQ, April MM, et al. Floor of mouth masses in children: proposal of a new algorithm. Int J Pediatr Otorhinolaryngol. 2013;77(9):1489-94.