Acronym

CNB - Core Needle Biopsy

Core Needle Biopsy

Image-guided biopsy using 14 to 18 gauge needle for tissue samples

Expansion

Core Needle Biopsy

Purpose

Provides more tissue than fine needle aspiration; allows architectural assessment

Clinical Context

Core needle biopsy: 14 to 18 gauge needle (14G larger, more tissue). Provides histology versus cytology. Allows immunohistochemistry, grading.

  • Fine needle aspiration
  • Biopsy

Key Points

  • Core needle biopsy higher diagnostic accuracy, more tissue; slightly higher complication risk than fine needle aspiration