INBDE (Integrated National Board Dental Examination) Practice Exam

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What type of biopsy involves a brush placed over an epithelial lesion?

Cytology
Aspiration
Incisional
Excisional

The correct answer is: Cytology

Cytology biopsies, also known as brushing cytology, involve using a small brush to collect cells from the surface of an epithelial lesion. This method is most commonly used to diagnose cancers of the respiratory tract, bladder, and other organs. Aspiration (B) and incisional (C) biopsies typically involve using a needle or scalpel to remove tissue from deeper within the body. Excisional (D) biopsies involve removing the entire lesion or a large portion of it for further examination. While all of these types of biopsies may be used to diagnose epithelial lesions, cytology is specifically done with a brush and focuses on collecting cells from the surface of the lesion.