Plunging ranula

Case contributed by Ammar Haouimi
Diagnosis almost certain

Presentation

Progressive painless swelling of the left submandibular space

Patient Data

Age: 15 years
Gender: Female
ultrasound
Transverse
Colour-doppler
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Info

A well-defined left submandibular cystic mass with thin wall and homogeneous echogenic content, posteromedial to the ipsilateral submandibular gland which appears of normal size and echotexture but displaced anterolaterally. The right submandibular gland is of normal size and echotexture.

ct
This study is a stack
Axial
non-contrast
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Axial with
contrast
This study is a stack
Coronal
reconstruction
This study is a stack
Sagittal
reconstruction
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Info

The mass is well-circumscribed, of cystic nature with no peripheral enhancement, located in the left sublingual space between the mylohyoid muscle laterally, geniohyoid/genioglossus complex medially, and the ipsilateral submandibular gland posterolaterally with extension to the adjacent submandibular space.

Case Discussion

Ultrasound and CT features are typical of a plunging ranula.

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