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. 2018 Feb 21;91(1085):20170666. doi: 10.1259/bjr.20170666

Figure 2.

Figure 2.

Renal mass biopsy of an upper pole lesion under ultrasound guidance (a) and a posteriorly located interpolar lesion biopsied under CT guidance (b). Upper pole lesions may require a steep trajectory and this may be easier under ultrasound guidance if the mass is clearly seen. Review of available imaging helps choose the appropriate guidance modality.