title: Axillary staging by percutaneous biopsy: sensitivity of fine-needle aspiration versus core needle biopsy.
abstract: BACKGROUND
  We sought to determine whether percutaneous core needle biopsy (CNB) of suspicious axillary lymph nodes in patients with breast cancer offers improved diagnostic accuracy compared with fine-needle aspiration (FNA).
  
  
  METHODS
  Records of 400 patients were reviewed to identify patients undergoing ultrasound-guided biopsy followed by surgical axillary evaluation (sentinel lymph node biopsy or axillary lymph node dissection). Patients underwent diagnosis and treatment at a single high-volume county hospital. Data collected included demographics, treatment, biopsy, and surgical pathology. Percutaneous biopsy results were compared with results of sentinel lymph node biopsy or axillary lymph node dissection.
  
  
  RESULTS
  Forty-seven patients met final study criteria. Twenty-two patients underwent FNA, and 25 underwent CNB. Sensitivity of FNA was 75% vs. 82% for CNB. Specificity for both was 100%. Additionally, a cost comparison of CNB versus FNA revealed CNB to be $404; FNA cost was $237.
  
  
  CONCLUSIONS
  The current data do not support the routine use of CNB over FNA for preoperative axillary staging in breast cancer patients with clinically negative axillas. Additionally, the substantial increase in cost without a marked improvement in sensitivity may favor the performance of FNA.
authors.affiliation: Department of Surgery, Division of Surgical Oncology, University of Texas Southwestern Medical Center, Dallas, TX, USA. Roshni.Rao@UTSouthwestern.edu
authors.forename: Roshni
authors.initials: R
authors.lastname: Rao
authors.forename: Lisa
authors.initials: L
authors.lastname: Lilley
authors.forename: Valerie
authors.initials: V
authors.lastname: Andrews
authors.forename: Lee
authors.initials: L
authors.lastname: Radford
authors.forename: Michael
authors.initials: M
authors.lastname: Ulissey
mesh_terms: D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D001365:Axilla; D044963:Biopsy, Fine-Needle; D001707:Biopsy, Needle; D001943:Breast Neoplasms / Q000473:pathology*; D005260:Female; D006801:Humans; D008197:Lymph Node Excision; D008198:Lymph Nodes / Q000473:pathology*; D008875:Middle Aged; D009367:Neoplasm Staging / Q000379:methods*; D012680:Sensitivity and Specificity; D021701:Sentinel Lymph Node Biopsy