chromoendoscopy

noun

chro·​mo·​en·​dos·​co·​py ˌkrō-mō-en-ˈdä-skə-pē 

variants also chromoscopy

krō-ˈmä-skə-pē 

plural chromoendoscopies

: a technique involving the topical application of stains or dyes (such as methylene blue, crystal violet, or Congo red) to tissues especially of the esophagus and gastrointestinal tract during endoscopic examination to enhance and facilitate detection and identification of abnormal cell growth (as that related to Barrett's esophagus, chronic ulcerative colitis, or cancers of the stomach, or colon)

Newer endoscopic techniques that are gaining acceptance, such as chromoendoscopy … may better delineate suspicious mucosal patterns and improve the detection of dysplasia.

—Silvio Danese and Claudio Fiocchi, The New England Journal of Medicine

chromoendoscopic

ˌkrō-mō-ˌen-də-ˈskä-pik 

adjective

also chromoscopic

ˌkrō-mə-ˈskä-pik 

chromoendoscopic methods

chromoendoscopic colonoscopy