Presentation
Palpable left neck mass for investigation and work-up.
Patient Data
There is unilateral agenesis of the right submandibular gland. There is consequent mild hypertrophy of the left submandibular gland. The left submandibular gland is otherwise normal, with no sialolithiasis, sialoadenitis, or sialectasia. The right submandibular bed appears normal. The parotid glands are normal and symmetric. The base of the skull appears satisfactory with no suspicious intra or extra-axial base of skull abnormality. There are no suspicious cervical lymph nodes. CT imaging is otherwise normal.
Case Discussion
This is a classic presentation of a palpable, unilateral left neck mass confirmed to represent a mildly hypertrophied left submandibular gland in a setting of a right submandibular gland agenesis/aplasia. The left submandibular and bilateral parotid glands are otherwise normal.
There is a confirmed absence of any previous neck surgical intervention.
The patient appears asymptomatic with respect to any dysphagia, dry mouth or any other oral symptoms.
There is no known background congenital syndromic disorder.
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