Table 2 Results of ultrasonography of sheep in group 2 (sheep remaining on their farms of origin and re-scanned at various intervals). The approximate depth of the hypoechoic area (mm) was estimated from videos of the ultrasonographs. Results are shown only for the side of the lungs with the more advanced lesions

From: Development of superficial lung lesions monitored on farm by serial ultrasonographic examination in sheep with lesions confirmed as ovine pulmonary adenocarcinoma at necropsy