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Fig. 1A —71-year-old woman with biopsy-proven tubulovillous adenoma who has undergone unsuccessful transrectal sonography. Images show advantages of biplane transducer technology, use of sodium phosphate enema, addition of color Doppler, and transvaginal scanning. Axial transrectal sonographic image shows soft mass on left wall of rectum outlined by fluid in rectum from sodium phosphate enema and evident on real-time examination.