Bronchial Epithelial Dysplasia

**Semantic type:** Finding

**Definition:** A non-invasive precancerous lesion in the bronchial epithelium. Depending on the morphologic features it is classified as columnar cell dysplasia, basal cell dysplasia, squamous dysplasia, or bronchial epithelial dysplasia with transitional differentiation.

**Synonyms:** - Endobronchial Dysplasia