TY - CHAP M1 - Book, Section TI - Mucocele A1 - Jauch, Edward C. A1 - Hall, Gregory A1 - Knoop, Kevin J. A2 - Knoop, Kevin J. A2 - Stack, Lawrence B. A2 - Storrow, Alan B. A2 - Thurman, R. Jason PY - 2021 T2 - The Atlas of Emergency Medicine, 5e AB - Mucoceles are mucous cysts occurring on the mouth or lip. Ranulas are mucoceles (mucous retention cysts) that develop in the floor of the mouth, arising from obstructed sublingual or submandibular ducts or smaller minor salivary glands. Initially, the cysts are small and barely noticeable, but over time, they can expand outward or deeper into the neck (plunging ranula). Large cysts can displace the tongue forward and upward, making the patient uncomfortable. Unlike those with sialolithiasis, patients with ranulas may not always notice an increase in swelling associated with eating. Mucoceles on the lip typically affect the lower lip. Physical examination reveals a soft, minimally tender, translucent cyst with dilated veins running over its surface. Unlike carcinomas, no ulceration is noted with ranulas, and they are generally softer. SN - PB - McGraw-Hill CY - New York, NY Y2 - 2024/03/28 UR - accessmedicine.mhmedical.com/content.aspx?aid=1181040227 ER -