Definition: A foramen or foramina seen in the midline of the mandible on the lingual aspect. This is a small foramen.
Radiographic Features:
Location: Midline of mandible, apical to mandibular central incisors.
Edge: Well-defined, corticated (thin to thick).
Shape: Round to ovoid.
Internal: Radiolucent.
Other: None.
Number: May be single or multiple. If multiple, the foramina will appear in a vertical order.
(click to enlarge)
Lingual foramen
Round radiolucent entity in midline of patient (yellow dot)
Lingual foramen – periapical radiographs
Lingual foramen – pantomograph
Lingual foramen – cone beam CT
cross-sectional view
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