<prompt> Where are Delphic nodes present in the body?PretrachealParatrachealSupraclavicularPosterior triangle  <response>: Delphic nodes are pretracheal lymph nodes. It is deep cervical lymph node which sits in the midline at the superior margin of the isthmus. Lymph from the upper pa of the thyroid gland reaches the upper deep cervical nodes jugulodigastric either directly or through the pre laryngeal node. Lymph from the lower pa of the thyroid gland reaches the lower deep cervical groupjuglo omohyoid either directly or through Delphic nodes and paratracheal nodes. 