Crohn’s disease complications. (a) Transverse view in lower abdomen shows fistula (white arrow) between terminal ileum/TI) and sigmoid colon (SC), black arrow points to small abscess, high resolution probe. (b) Oblique section of terminal ileum (TI) with blind fistula (thick arrow) into echogenic mesenterial fat and ileovesical fistula (thin arrow). Standard abdominal probe. (c) Stricture of ileum (S) with prestenotic dilatation (D)—standard abdominal probe. (d) TUS with color doppler and peroral contrast—Crohn’s terminal ileum stenosis with intramural hypervascularisation (with CFD) indicates inflammatory stenosis—high resolution probe.
