Ultrasound diagnosis of small bowel adenocarcinoma in Crohn’s disease: A case report and review of literature

Figure 1 Ultrasound images of the patient. A: Intestinal ultrasonography demonstrated uneven, eccentric wall thickening of the ileocecal junction, disappearance of the layered structure, and the pseudo-kidney sign (arrows); B: Color Doppler Flow Imaging revealed linear blood flow (arrows); C and D: After a bolus injection of 2.0 mL of Sonovue contrast agent into the left antecubital vein of the patient, contrast-enhanced ultrasonography demonstrated disappearance of the bowel wall stratification, heterogeneous high enhancement, and rapid washout (arrows).

Figure 2 Computed tomography enterography images of the patient. A and B: Computed tomography enterography demonstrates segmental bowel wall thickening, local narrowing of the intestinal lumen, dilation and fluid accumulation in the small intestine, clear surrounding fat planes, and slight increase in the number of vessels on the mesenteric side.

Figure 3 Gross specimen and histopathological section of the patient. A: Gross specimen showed a tumor in the ileocecal junction (arrow); B: Histopathological section (× 100) showed poor-differentiated adenocarcinoma, which was T3 staging.