ductal carcinoma in situ
noun
: any of a histologically variable group of precancerous growths or early carcinomas of the lactiferous ducts that have the potential of becoming invasive and spreading to other tissues
—abbreviation DCIS
Cite this Entry
“Ductal carcinoma in situ.” Merriam-Webster.com Medical Dictionary, Merriam-Webster, https://www.merriam-webster.com/medical/ductal%20carcinoma%20in%20situ. Accessed 30 Nov. 2025.
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