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An overlying air‐filled colon will obscure the far‐field, making the bladder appear in odd shapes, and if colon or small bowel gets under the bladder, either may be mistaken for sediment, calculi, and masses (see Figure 6.27) (see Chapters 3 and 11). It is a good habit to check where the probe and the beam (the scanning plane) are directed to help interpret your image (see Chapter 5).

Pearl: Change the position of the probe and alter the pressure of the probe on the patient (both a little more and a little less) to coax the colon out of your way or sweep toward midline while imaging in the “CC pouch” to get away from the air‐filled colon.