AMELIA AND KORACICK PERFORM A RISKY PROCEDURE TO REMOVE A BRAIN TUMOR, ON ABC'S 'GREY'S ANATOMY'

Guest Starring Greg Germann

"Hold Back the River" - Amelia, Koracick and DeLuca perform a risky, groundbreaking procedure using ultrasound waves to remove a young patient's brain tumor. Meanwhile, Meredith and Jo work with different polymers to try to salvage their project submission; and Richard's AA sponsor is admitted to Grey Sloan with a DNR, on "Grey's Anatomy," THURSDAY, APRIL 5 (8:00-9:00 p.m. EDT), on The ABC Television Network, streaming and on demand.

Guest starring are Jason George as Ben Warren, Greg Germann as Tom Koracick, Jeanine Jason as Sam Bello, Alex Blue Davis as Casey Parker, Jake Borelli as Levi Schmitt and Jaicy Elliot as Taryn Helm.

"Hold Back the River" was written by Alex Manugian and directed by Geary McLeod.

"Grey's Anatomy" stars Ellen Pompeo as Meredith Grey, Justin Chambers as Alex Karev, Chandra Wilson as Miranda Bailey, James Pickens Jr. as Richard Webber, Kevin McKidd as Owen Hunt, Jessica Capshaw as Arizona Robbins, Jesse Williams as Jackson Avery, Sarah Drew as April Kepner, Caterina Scorsone as Amelia Shepherd, Camilla Luddington as Jo Wilson, Kelly McCreary as Maggie Pierce and Giacomo Gianniotti as Andrew DeLuca.

"Grey's Anatomy" was created and is executive produced by Shonda Rhimes ("Scandal," "How to Get Away with Murder"). Betsy Beers ("Scandal," "How to Get Away with Murder"), Mark Gordon ("Saving Private Ryan"), Krista Vernoff ("Shameless"), William Harper, Zoanne Clack, Debbie Allen and Fred Einesman are executive producers. "Grey's Anatomy" is produced by ABC Studios.

"Grey's Anatomy" is broadcast in 720 Progressive (720P), ABC's selected HDTV format, with 5.1-channel surround sound. This program carries a TV-14, D parental guideline.