Presentation
The patient presents with a floor of mouth swelling. CT imaging for diagnosis and surgical planning.
Patient Data
A well-defined, thin-walled, cystic, non-enhancing mass extends from the left sublingual to the submandibular space. There is a regional mass effect with a right-sided deviation of the geniohyoid/ genioglossus complex, asymmetric oropharynx, and mild extrinsic compression of the left submandibular gland. The sublingual "tail" is relatively collapsed.
Case Discussion
Features consistent with a plunging (diving or cervical ) ranula.
The broad differential diagnosis includes:
oral cavity / parotid hemangioma
cysts (dermoid/epidermoid/ thyroglossal duct/ 2nd branchial cleft)
cystic/ necrotic lymph adenopathy
necrotic oral cavity tongue malignancy
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