PMC7194416_01
(a) An echogenic mass was found in the right mid-abdomen (white arrow). (b) High-resolution linear probe image, the mass appeared to be an intraluminal lesion (between white arrows). (c) minimal internal vascularity or Doppler interrogation (blue arrow)
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F1
A well-defined, pedunculated hyperechoic mass, with minimal vascularity on color Doppler, measuring 5.4 cm x 4.0 cm, was visualized in the right mid-abdomen [Figure 1].
The right mid-abdominal mass is associated concentric layers of alternate hypoechoic (long arrow) and hyperechoic (short arrow), with a stalk (arrowhead) in keeping with a superimposed colocolic intussusception
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F2
Superimposed intussusception was also noted [Figure 2].
Contrast-enhanced coronal (a) and sagittal (b) computed tomography images show a well-defined hypodense mass distending the lumen of the ascending colon near the hepatic flexure (arrows). (c) Superimposed colocolic intussusception is better appreciated on axial computed tomography image (red arrow)
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F3
Contrast enhanced CT of the abdomen and pelvis was then performed, which demonstrated a well-defined pedunculated hypodense mass in the right side of the abdomen, telescoping into the ascending colon [Figure 3].
Images obtained during colonoscopy (a and b): an intraluminal well-defined lesion which is submucosal in location (red arrow)
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F4
Subsequent colonoscopy performed confirmed a 3.0 cm x 3.0 cm lobular mass in the ascending colon near the caecum [Figure 4], in the expected position of the aforementioned lipoma.