nasal cavity carcinoma in situ (MONDO_0003784, a Monarch Disease Ontology entry) is a in situ carcinoma that involves the nasal cavity. Also known as: carcinoma in situ of nasal cavities, carcinoma in situ of nasal cavity, carcinoma in situ of the nasal cavity, nasal cavity in situ carcinoma, stage 0 carcinoma of nasal cavity, stage 0 carcinoma of the nasal cavity, stage 0 nasal cavity cancer, stage 0 nasal cavity cancer aJCC v6, v7, and v8.