Rectal ultrasound with fine needle aspiration: an underutilized modality for delineating and diagnosing perirectal, presacral, and pelvic lesions.
Brown LK, Clark NR, Conway J, Mishra G. Rectal ultrasound with fine needle aspiration: an underutilized modality for delineating and diagnosing perirectal, presacral, and pelvic lesions. Endosc Int Open. 2019 Feb; 7(2):E171-E177.