abnormal tongue morphology abnormal tongue foramen cecum morphology MP:0013234 MPheno.ontology abnormal Morgagni foramen1 morphology abnormal blind foramen of the tongue moprhology abnormal cecal foramen of the tongue morphology abnormal ductus lingualis morphology abnormal foramen cecum linguae morphology any structural anomaly of the median pit on the dorsum of the posterior part of the tongue, from which the limbs of a V-shaped furrow run forward and outward; the foramen cecum is the point of attachment of the thyroglossal duct and is formed during the embryological descent of the thyroid gland