Organ
Submental lymph nodes
Level Ia nodes on the mylohyoid beneath the chin
High-yield
The tongue tip and central lower lip commonly drain here, but their lymphatic pathways overlap and may involve both sides.
Overview
Submental nodes occupy the space between the anterior digastric bellies, on the superficial surface of mylohyoid. They receive lymph from the chin and selected anterior oral regions. Their efferents may reach submandibular nodes or pass toward the deep cervical chain.
Reference facts
- Location
- Submental triangle, between the anterior digastric bellies and superficial to mylohyoid, below the mandibular symphysis.
- Parts
- A variable small group designated level Ia.
- Drains from
- Chin, central lower lip, tongue tip, anterior floor of the mouth and the mandibular incisor region.
- Venous/Lymphatic drainage
- Submandibular nodes and deep cervical pathways, with connections that may reach either side.
- Function
- Provides regional immune surveillance and filtration of lymph from anterior midline oral and facial tissues.
Clinical correlation
Midline oral or lower-lip disease can therefore produce bilateral nodal involvement. Neither this pattern nor the location of an enlarged node determines whether the underlying cause is infection or malignancy.
Frequently asked questions
Where are the submental lymph nodes located?
The submental lymph nodes lie submental triangle, between the anterior digastric bellies and superficial to mylohyoid, below the mandibular symphysis.
What do the submental lymph nodes do?
Provides regional immune surveillance and filtration of lymph from anterior midline oral and facial tissues.
What are the parts of the submental lymph nodes?
A variable small group designated level Ia.
How do the submental lymph nodes drain?
Submandibular nodes and deep cervical pathways, with connections that may reach either side.