SAEVA Congress 2018 Proceedings | 12-15 February 2018 | ATKV Goudini Spa
Perilaryngeal abscess dorsal to the affected arytenoid cartilage have been identified and tracts connecting these abscesses to the chondritic cartilage have also been identified ultrasonographically in a few horses . Ultrasonography of the larynx can help in identifying early cases of arytenoid chondritis and direct clinical decision making in affected horses . Once the infection has resolved , the affected arytenoid cartilage remains enlarged , although the hyperechoic echoes consistent with gas reportedly resolve .
Dorsal displacement of the soft palate Although a more ventral positioning of the basihyoid bone at the base of the lingual process has been significantly associated with dorsal displacement of the soft palate during exercise , there is overlap between affected and non-affected horses . This measurement is obtained at the caudal aspect of the lingual process of the basihyoid bone . The reason for this more ventral positioning is not known .
Laryngeal dysplasia The diagnosis of laryngeal dysplasia is made with the detection of dorsal extension of the thyroid cartilage lamina , lack of the cricothyroid articulation and absence or hypoplasia of the cricopharyngeus muscle . Ultrasonography enables the clinician to definitively diagnose laryngeal dysplasia when suspected on endoscopic evaluation .
Left laryngeal dysplasia Thoracic ultrasonography
Exercise-induced pulmonary hemorrhage ( EIPH ) The typical location of the suspected underlying disease process in horses with EIPH is the caudodorsal lung field . Small , discrete hypoechoic irregularities with comet-tail artifacts ( more accurately known as B lines or “ lung rockets ”) in the visceral pleural surface may be the only sonographic abnormality in horses with EIPH .
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