In @entity1 suffering from @entity1282 , a @entity5 of the tongue and its base must be excluded. This is not always possible by means of endoscopy and palpation. In contrast it is possible to visualize deep-seated structures of this region by ultrasound. Unfortunately, this technique is rarely used, as shown in the cases demonstrated. We present five @entity1 suffering from @entity1282 for a long period of time (up to 30 years) where ultrasound was not performed and a @entity5 and the base of the tongue was overlooked. Thus, adequate therapy was delayed, which proved to be especially relevant in three @entity1 suffering from a malignoma. Three @entity1 suffered from a @entity5 . Up to two years passed between the beginning of @entity1282 and the necessary surgical treatment. One of these @entity1 even underwent psychological treatment for his symptoms. In two other @entity1 a @entity48 and @entity16490 were removed. In @entity1 suffering from @entity1282 with normal endoscopic findings and normal palpation of the neck ultrasound of the floor of the mouth and the base of the tongue is imperative. @entity5 of this area can be detected early with high sensitivity and cost-effectiveness by ultrasound.

[ XXXX without clinically relevant pathological correlation: to exclude @entity5 and the base of the tongue ultrasound diagnosis is mandatory].

@entity1 :: ('9606', 'Species') :: ['patients'] @entity5 :: ('MESH:D009369', 'Disease') :: ['Tumours', 'tumour of the floor of the mouth', 'malignant tumour of the base of the tongue', 'tumour'] @entity16490 :: ('MESH:D050033', 'Disease') :: ['ectopic thyroid tissue'] @entity48 :: ('MESH:D003884', 'Disease') :: ['dermoid cyst'] @entity1282 :: ('MESH:D003680', 'Disease') :: ['dysphagia']
@entity1282 :: (MESH:D003680,Disease) :: ['Dysphagia']
