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Does breast tumor location influence success of sentinel lymph node biopsy? J Am Coll Surg 2002 Mar;194(3):278-84 PMID: 11893131

Pubmed ID



BACKGROUND: Controversy exists regarding the influence of sentinel lymph node (SLN) mapping technique or patient variables on the success rate of SLN mapping. We undertook a prospective study in a single institution series to evaluate multiple variables that could adversely affect SLN identification rates.

STUDY DESIGN: Data were collected on 174 patients who underwent 177 SLN mapping procedures followed by axillary dissection from October 1996 through January 2000. Patient demographics, body mass index (BMI), biopsy method, tumor size, palpability, and location were recorded. SLNs were identified by blue dye only (n = 31), Tc-99m sulfur colloid only (n = 34), or combined techniques (n = 112). Data were analyzed by logistic regression analysis and expressed as the probability of failure to map the SLN.

RESULTS: SLNs were identified successfully in 150 of 177 procedures (85%) with a false negative rate of 3.7%. Mapping success reached 93% using combination blue dye and isotope. Variables found to adversely affect SLN mapping success and the odds ratio of failure (OR) included lower inner quadrant (LIQ) location (OR 35.6), blue dye only (OR 42.4), BMI >30 and upper outer quadrant (UOQ) location (OR 14.6), and nonpalpable UIQ location (OR 25). LIQ location adversely affects mapping success independent of technique, tumor size, or obesity. Obesity and nonpalpability were adverse factors when tumors were located in the UOQ and UIQ, respectively. Age, biopsy technique, and tumor diameter did not affect SLN mapping success.

CONCLUSIONS: SLN mapping success is influenced by technique and tumor location, with best results achieved using combined techniques and for lesions located in quadrants other than the LIQ. Obesity and tumor palpability influence success in the context of tumor location.

Author List

Ahrendt GM, Laud P, Tjoe J, Eastwood D, Walker AP, Otterson MF, Redlich PN


Purushottam W. Laud PhD Professor in the Institute for Health and Equity department at Medical College of Wisconsin
Mary F. Otterson MD Professor in the Surgery department at Medical College of Wisconsin
Philip N. Redlich MD, PhD Professor in the Surgery department at Medical College of Wisconsin
Alonzo P. Walker MD Professor in the Surgery department at Medical College of Wisconsin


2-s2.0-0036192490   28 Citations

MESH terms used to index this publication - Major topics in bold

Breast Neoplasms
Breast Neoplasms, Male
Lymph Node Excision
Middle Aged
Prospective Studies
Rosaniline Dyes
Sentinel Lymph Node Biopsy
Technetium Tc 99m Sulfur Colloid
jenkins-FCD Prod-297 dff1a717c492f00bf6291286365f1f4fe95208f1