The borders of the nodule - case 2019 (ultrasonographic picture 1b)

Left lobe, transverse scan. The border between the nodular area and the non-nodular part of the lobe is indistinctive. The cause of the blur is non-pathological in the ventral part of the nodule (yellow arrows), it can be simply explained by the similar echo structure of the neighboring tissues. On the other hand, the area marked with red arrows should be considered as pathological blur.