32 year old male presented with complaints of foreign body sensation throat and difficulty in swallowing since 1 month. Not a smoker, alcoholic.
On examination: Oral cavity normal, oropharynx normal, neck no nodes.
Flexible laryngoscopy: Showing a smooth mass in the substance of base of tongue, in the midline. See the attached image. Rest of the study unremarkable.
What could be the provisional diagnosis?